NEED HELP FAST WILL GIVE MEDAL AND FAN

In which sentence does the verb agree with the subject?

A.
Here are some lids for those plastic containers.

B.
There is, of course, easier answers to this question.

C.
Here is those envelopes from the desk drawer.

Question

NEED HELP FAST WILL GIVE MEDAL AND FAN

In which sentence does the verb agree with the subject?	
 
 A.
Here are some lids for those plastic containers.
 
 B.
There is, of course, easier answers to this question.
 
 C.
Here is those envelopes from the desk drawer.

anonymous · Answer

B.Sounds like the best one. 

c. Sounds weird.. "Here is?"
a. "Those" shouldn't it be these?

I'm just going with what sounds right, and A fits! :P