Suppose That the Marginal Benefit of Having a Security Camera

Suppose that the marginal benefit of having a security camera in the library is given by MB,at the supermarket is given by MB₁ and at the museum is given by MB₂.All values are per week.
Suppose cameras are currently allocated efficiently.Now suppose that a camera at the museum malfunctioned and it will take two weeks to replace it.Owners of the supermarket would

A) be willing to rent the museum a camera for less than the value of the camera to the museum.
B) not be willing to rent the museum a camera for less than the value of the camera to the museum,but managers at the library would.
C) not be willing to rent the museum a camera for less than the value of the camera to the museum,and neither would managers at the library.
D) exploit the situation by renting a camera to the museum for more than $U per week.