Which sentence is punctuated correctly?

A.
Abby collected rocks, sticks, and leaves on the hike; but Jim, I think, picked up only stones.

B.
Abby collected rocks, sticks, and leaves on the hike but Jim, I think, picked up only stones.

C.
Abby collected rocks, sticks, and leaves on the hike, but Jim; I think; picked up only stones.

D.
Abby collected rocks; sticks; and leaves on the hike, but Jim, I think, picked up only stones.

Question

Which sentence is punctuated correctly?	
 
 A.
Abby collected rocks, sticks, and leaves on the hike; but Jim, I think, picked up only stones.
 
 B.
Abby collected rocks, sticks, and leaves on the hike but Jim, I think, picked up only stones.
 
 C.
Abby collected rocks, sticks, and leaves on the hike, but Jim; I think; picked up only stones.
 
 D.
Abby collected rocks; sticks; and leaves on the hike, but Jim, I think, picked up only stones.

anonymous · Answer

I think it's B

anonymous · Answer

It is because semi colons aren't necessary  in any of the sentences