When oil was spilled out in the middle of a lake, it spread out on the surface of the water in a circularpattern. The radius of the circular pattern increased at a rate of 3.5 feet per minute. ( () = 3.5 /)A. [3 pts] How fast was the area of the circular pattern increasing per minute? Construct the compositefunction to show how the area was increasing each minute. ( () = 2 2/ ).B. [2 pts] Find the radius of the circular pattern of oil 150 seconds after the oil starts to spread.C. [2 pts] Find the area of the circular pattern of oil 4 minutes after the oil starts to spread.