Which sentence is wrong?[ ]

A.I felt it impossible for him to take the exam.

B.I found it impossible that he might take the exam.

C.I thought that he might not take the exam.

D. In my opinion he might take the exam.

乳腺癌最常发生于 * * 的

A．外上象限

B．外下象限

C．内上象限

D．内下象限

E．中央部