[单选题]
When a football in a field goal attemq97 ro;wyn oqun /qe:q/g.ta1nl1objahn8 f+u ,i* u2pt reaches its maximum height, how does its speed compare to its initialo*ahj+l,n8ui nb2 fu1 speed?
A. It is zero.
B. It is less than its initial speed.
C. It is equal to its initial speed.
D. It is greater than its initial speed.