Read the sentences below carefully.
Greg walked his dog. He gave it a bath.
What is the BEST way to join the two sentences using a coordinating conjunction?
A.
Greg walked his dog and he gave it a bath.
B.
Greg walked his dog: and he gave it a bath.
C.
Greg walked his dog, and he gave it a bath.
D.
Greg walked his dog and, he gave it a bath.