Suppose the Quantity Demanded for a Security Is B_D =

Suppose the quantity demanded for a security is B_D = 150 ? 0.1b,
And the quantity supplied of the security is
B_S = 50 + 0.1b,
Where b is the price of the security in dollars.Suppose that the supply curve shifts to
B_S = 75 + 0.1b.
The equilibrium price of the security

A) rises by $50.
B) rises by $125.
C) falls by $125.
D) falls by $50.