The ____ worn by the emperor of Yuan Dynasty were connected, with narrow sleeves and lapels. It was tight and narrow, short and wide. There were many folds on the waist. There were big beads on the back.A. Zhisun suitB. Yi sanC. coatD. riding suit

本题考查对中国古代服饰知识的了解。解题思路是根据题目中对服饰特征的描述，逐一分析各个选项所代表的服饰是否符合这些特征。

• 选项A：“Zhisun suit”（直孙服），是元代皇帝所穿的服饰，其特点与题目中描述的“connected, with narrow sleeves and lapels. It was tight and narrow, short and wide. There were many folds on the waist. There were big beads on the back”相符。
• 选项B：“Yi san”（曳撒），虽然也是元代的服饰，但它的特点与题目描述不完全一致。
• 选项C：“coat”（外套），这是一个比较宽泛的概念，与题目中所描述的元代皇帝的特定服饰特征不相符。
• 选项D：“riding suit”（骑服），主要强调的是骑马时所穿的服装，与题目中描述的服饰特征差异较大。