GAUSS8 2016 Problem 12

Operations are placed in each \bigcirc so that 3\bigcirc5\bigcirc7\bigcirc9=78. Listed from left to right, the operations are

Answer Choices
A. +,\times,+
B. +,+,\times
C. \times,\times,-
D. \times,\times,+
E. \times,+,\times