If the Perfectly Competitive Market Supply of Pork Bellies Shifts

If the perfectly competitive market supply of pork bellies shifts from Q_S,93 = 250 + 50P to Q_S,94 = 400 + 40P,and the market demand is given by Q_D = +10,000 - 200P,then the change in equilibrium price will be:

A) $2.
B) $1.
C) $0.
D) -$1.
E) -$2.