When the Momentum of a Punch Is Stopped by the Fighter's

When the momentum of a punch is stopped by the fighter's jaw while he moves into the oncoming punch, the result is

A) an increase in the relative velocity of the blow,
B) a decrease in the time of contact of the blow,
Which thereby most greatly increases the
C) force.
D) impulse.
E) momentum.
F) inertia.
G) energy.