[求助]PREP的一道题，求NN解答呀

A scrub jay can remember when it cached a particular piece of food in a particular place, researchers have discovered, and tend not to bother to recover a perishable treat if stored long enough to have rotted.

A. tend not to bother to recover a perishable treat if

B. they tend not to bother recovering a perishable treat

C. tending not to bother to recover a perishable treat it

D. tends not to bother recovering a perishable treat

E. tends not bothering to recover a perishable treat it

答案：D

and 的平行前后一个是can remember 一个是tends...这个是可以并列的么？
可以把tends 改成 tend 或者 can tend 表示并列么？