It's two years since they ____ each other, and they are going to get married next month. [ ]

A. were in love with

B. fell into love with

C. have loved

D. fell in love with

一般保证的保证人在主合同纠纷未经审判或者仲裁，并就债务人财产依法强制执行仍不能履行债务前，对债权人可以主张下列哪种权利？（）

A.同时履行抗辩权

B.不安抗辩权

C.先诉抗辩权

D.抗辩权