Suppose the quantity demanded for a security is BD = 150 - 0.1b, and the quantity supplied of the security is BS = 50 + 0.1b, where b is the price of the security in dollars. Suppose that the supply curve shifts to BS = 75 + 0.1b.
The equilibrium quantity of the security
Select one:
a. rises by 25
b. rises by 12.5
c. falls by 125
d. rises by 5