—under the desk? －No, they aren’t.A. Where areB. What’sC. Are those rulersD. Is that ruler

— under the desk? －No, they aren’t.
A. Where are
B. What’s
C. Are those rulers
D. Is that ruler

A. Where areB. What’s(答案→)C. Are those rulersD. Is that ruler解析：句意：——这些尺子在桌子底下吗？——不，它们不在。根据答语No, they aren’t可知，问句是一个一般疑问句，并且使用复数。

这个解释是对的