A3型题 患者男性，64岁。缺失，间有约1.55mm间隙，不松动。舌向前倾斜，不松动，健康。区舌侧牙槽骨为斜坡形为防止食物嵌塞，上卡环的最佳设计是
A
<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20230104/12270178_0_6.gif">间置隙卡 B
<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20230104/12270178_0_7.gif">单臂卡和近中支托 C
<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20230104/12270178_0_8.gif">三臂卡，<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20230104/12270178_0_9.gif">隙卡 D
<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20230104/12270178_0_10.gif">联合卡环 E
<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20230104/12270178_0_11.gif">联合舌支托，<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20230104/12270178_0_12.gif">颊舌侧单臂卡环
