help:刘振民语法E10-15

On stage, the force of Carrick's personality and the vividness of his acting disguised the fact he was, which his surviving velvet suit shows, a short man.

a.

b.he was, and it is his surviving velvet suit that shows it,

c.of him being, as his surviving velvet suit shows,

d.that he was, as his surviving velvet suit shows,

e.shown in his surviving velvet suit, that he was

the correct answer is d.

question: 从句'which his surviving velvet shows'是现在时态但主句是过去时态，这里没有问题么？应该怎样理解？

谢谢！！