Mihir had an equal number of goldfish and guppies in his aquarium. After 28 goldfish and 196 guppies had been sold, the number of goldfish was five times that of the number of guppies. How many guppies were there at first?
A. 236 guppies
B. 238 guppies
C. 276 guppies
D. 318 guppies