根据以下材料，回答44-47题
Passage Three
Whenyou stretch out in the sun you can do one of the three things: you can use no suntan oil, an ordinary sun tan oil; or Bergasol.
If you don´t use any sun tan oil when you´re in the sun, you will burn surprisinglyquickly. If you use an ordinary sun tan oil, you will protectyour skin to a lesser or greater degree.How much protection depends on the"protection-factor number" on the bottle. Some oils block out so manyof the sun´s rays and you can stay in the sun all day without burning but youwon´t go very brown,either.
Bergasol will protect your skin like an ordinary sun tan oil. It also has a tan acceleratorthat speeds up the rate at which the sun activates the skin cells that producemelanin(黑色素). It is melanin that gives the skin itsbrown colour. Bergasol enables you to go brown faster,am as the days pass thedifference will become more obvious.Unfortunately, this special formulation isn´tCheap to prepare.So Bergasol is rather more expensive than ordinary sun tanoil. However, the price looks more attractive as you do.
Bergasoi It makes you go brown faster
Protection Many people imagine that"cover-up" means you don´t get a tan. Nothing to show for yourholiday.
Not so. With "cover-up", you can get brown if you want to. The point of"cover-up" is to protect your skin from the harmful rays of the sunwhich,according to the experts ,make your skinlook older.
That´s what Solex Cover-up is allabout--protection for your skin. It has a Sun Protection Factor 8, which makesit suitable for anyone. Find out how it works for you by consulting the SolexSun Chart. On sale wherever Solex is. With Solex Cover-up, you can tan asslowly as you like. As gently as you like. And with much less
chance of peeling. Your tan will lookbetter. Your skin will stay young longer.
Solex Gentle tan.., full protection
Compared with Solex, Bergasol__

A helps one go brown more quickly

B better protects one's skin

C is more competitive in price

D is a better sun tan oil