对OG13-15题正确选项的疑惑。。求NN来答

julie0808

15. Many experts regarded the large increase in credit card borrowing in March not as a sign that households were pressed for cash and forced to borrow, rather a sign of confidence by households that they could safely handle new debt.

(A) rather a sign of confidence by households that they could safely

(B) yet as a sign of households’ confidence that it was safe for them to

(C) but a sign of confidence by households that they could safely

(D) but as a sign that households were confident they could safely

(E) but also as a sign that households were confident in their ability safely to
正确选项是D ，难道D选项不是 a sign that households were confident that they could safely么， 不应该是表语从句不能省略that 么，

我在网上搜看到有人说they could safely...是But从句的SVO， as a sign that households 是修饰它的， 那样的话不是不平行了么，而且they容易指代主句的many experts .

所以D选项为什么没有that 呢？ 希望下午可以看NN的答案  5555~~~