In a PFI system with a return line, why is the fuel pressure regulator indexed to intake manifold pressure? A. To increase the rate of fuel flow through the fuel injectors when the engine is under...

In a PFI system with a return line, why is the fuel pressure regulator indexed to intake manifold pressure?

A. To increase the rate of fuel flow through the fuel injectors when the engine is under high load

B. To maintain a consistent rate of fuel flow through the injectors, regardless of engine load

C. To reduce the rate of fuel flow through the injectors when the engine is under high load

D. To ensure that the fuel injectors will not be able to supply fuel if the engine stalls and manifold vacuum is lost