Albin Has Quasilinear Preferences and He Loves Pretzels

Albin has quasilinear preferences and he loves pretzels. His inverse demand function for pretzels is p(x) = 49 - 6x, where x is the number of pretzels that he consumes. He is currently consuming 8 pretzels at a price of $1 per pretzel. If the price of pretzels rises to $7 per pretzel, the change in Albin's consumer surplus is

A) -$90.
B) -$56.
C) -$42.
D) -$45.
E) -$42