求教一道语法题（关于虚拟语气，Even if)

For many people, houseshold labor remains demanding even if able to afford household appliances their grandparents would find a miracle.

A even if able to afford household applianes their grandparents would find a miracle

B despite being able to afford household appliances their grandparents would find a miracle

C even if they can afford household appliances their grandparents would have found miraculous

D although they could afford household appliancews their grandparents would find miraculous

E even if they are able to afford household appliances which would have been a miracle to their grandparents

这道题 A.B 选项一开始，根据逻辑主语，很快就排除了。 E选项被动的也可排除。另外，这3个选项都是用的 be able to

迷惑的是C与D选项。答案是C。我选的D

其中3个不同的地方是，C用的Even if, D是改成了Although, 另外一个用的Could, 另外一个是Can, 一个是Would have done, 另外一个是Would do.

还有，这道题，为什么不是用be able to 而是 can? be able to 表示有能力购买啊， can 只表示可能性。。。。

在此请教NN帮助解答！！