Which is the correct way to combine the sentences into one sentence with a compound subject?

Tadpoles swam in the stream.
Minnows swam in the stream.

A.
Tadpoles swam and minnows swam in the stream.

B.
Tadpoles and minnows swam in the stream.

C.
Tadpoles swam in the stream, and minnows swam in the stream.

D.
Tadpoles swam in the stream with minnows.

Question

Which is the correct way to combine the sentences into one sentence with a compound subject? 

Tadpoles swam in the stream. 
Minnows swam in the stream.
 
 A.
Tadpoles swam and minnows swam in the stream.
 
 B.
Tadpoles and minnows swam in the stream.
 
 C.
Tadpoles swam in the stream, and minnows swam in the stream.
 
 D.
Tadpoles swam in the stream with minnows.

anonymous · Answer

Which do you think it is?

anonymous · Answer

Tadpoles and minnows swam in the stream

anonymous · Answer

That's correct. The reason is because they're both swimming, so there is no need to separate them in the sentence