A vault is opened by applying a force of 300 N perpendicular to the plane of the door, 0.80 m from the hinges.Find the torque due to this force about

A vault is opened by applying a force of 300 N perpendicular to the plane of the door, 0.80 m from the hinges.Find the torque due to this force about an axis through the hinges.
A)120 Nm
B)240 Nm
C)300 Nm
D)360 Nm