Frank had b bottles of water before his friends came over. His friends drank 11 bottles of water. After his friends left, Frank went to the store and bought 18 bottles of water. Which expression shows how many bottles of water Frank has currently?%0D%0A A. %0D%0Ab - (11 + 18)%0D%0A B. %0D%0Ab - 11 - 18%0D%0A C. %0D%0Ab + 11 + 18%0D%0A D. %0D%0Ab - 11 + 18
