Use the Result, "The Tangential and Normal Components of Acceleration

Multiple Choice

Use the result, "the tangential and normal components of acceleration for a projectile fired at an angle with the horizontal at an initial speed of are and respectively.", to find the normal component of acceleration for a projectile fired at an angle of with the horizontal at an initial speed of 148 feet per second. What is the component when the projectile is at its maximum height?

A) 0
B) 74
C) 148
D) 32
E) 16