问题

Sir, we have failed to work out this problem. What is exactly the right way?— Look. Only in this way ________ , but you boys _____ a wrong way.
A:you can work it out; take
B:you can work out it; take
C:can you work it out; take
D:can you work it out; took
B:you can work out it; take
C:can you work it out; take
D:can you work it out; took
正确答案是: