1. How would you correct the underlined portion of the following sentence?

"But not all brands of bottled water are the same, many bottlers use the same municipal water that comes from your tap."

A. all brands of bottled water are the same, many bottlers use
B. all brands of bottled water are the same; many bottlers use
C. all brands of bottled water are the same many bottlers use
D. all brands of bottled water are the same, but bottlers use