Mr. Gibson is friendly to his customers he is a successful business owner.

Which is NOT a way to correct the run-on sentence?
A) Mr. Gibson is friendly to his customers; he is a successful business owner.
B) Mr. Gibson is friendly to his customers. He is a successful business owner.
C) Mr. Gibson is friendly to his customers and he is a successful business owner.
D) Mr. Gibson is friendly to his customers, and he is a successful business owner.