An Airplane Flying at 115 M/s Due East Makes a Gradual

Multiple Choice

An airplane flying at 115 m/s due east makes a gradual turn following a circular path to fly south. The turn takes 15 seconds to complete.
-What is the magnitude of the centripetal acceleration during the turn?

A) zero m/s²
B) 6.9 m/s²
C) 8.1 m/s²
D) 9.8 m/s²
E) 12 m/s²