A Typhoon Is a Tropical Cyclone, Like a Hurricane, That

Multiple Choice

A typhoon is a tropical cyclone, like a hurricane, that forms in the northwestern Pacific Ocean.The wind speed of a typhoon is given by a function W = w(r) where W is measured in meters/sec., and r is measured in kilometers from the center of the typhoon.What does the statement that w'(15) > 0 tell you about the typhoon?

A) At a distance of 15 kilometers from the center of the typhoon, the wind speed is increasing.
B) At a distance of 15 kilometers from the center of the typhoon, the wind speed is positive.
C) The wind speed of the typhoon is 15 meters per second at any distance from the center of the typhoon.