The Bonus of a Plant Manager in a Vertically Integrated

The bonus of a plant manager in a vertically integrated firm is based on the following formula:
Bonus = 10,000 - 0.5(Qf - Q)
Where Qf is feasible production and Q is actual production. The value for Qf is provided by the plant manager at the beginning of the year. With this scheme, the plant manager has an incentive:

A) to underestimate Qf.
B) to overestimate Qf.
C) to reveal the true Qf and make Q as small as possible.
D) to reveal the true Qf and make Q as large as possible.