118.
Art museums
do not usually think of their collections as capital or consider the interest
income that would be generated if a portion of the capital would have been
invested in another form.
(A)
be generated if a portion of the capital would have been
(B)
have been generated if a portion of the capital would have been
(C)
be generated if a portion of the capital were
(D)
be generated if a portion of the capital was（C）
(E)
be generated if a portion of the capital had been
答案是C，不明白为什么用复数“were”，而不用单数形式？
大家帮忙看看！谢谢！
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