885 sec d 2

luyiut

As the housing affordability gap widens, middle-income families are especially hard-hit, and these families can no longer qualify to buy homes, and rising rental rates force them to use far more than the standard 25 percent of their incomes for housing, leaving them with no equity or tax write-offs to offset the expenditures.
(A) and these families can no longer qualify to buy homes, and
(B) since these families can no longer afford to buy homes, furthermore
(C) for these families can no longer afford to buy homes, yet
(D) and these families can no longer afford to buy homes; however,
(E) and these families can no longer afford to buy homes, for

why the  answer is c, no a or else

Thanks

dreadpower

选C：A，D，E中用and连接，逻辑关系不对，因为要表示原因

             B用since引起原因从句，错，应该用because

            此外：C的yet表示转折，也是最对的，其他选项的连接词逻辑不对