The brain mass of a human fetus during the last trimester can be accurately estimated from the c3 1500 100 c c is the circumference (in centimeters) of the head. circumference of teh head by m(c) : , where m(c) is the mass of the brain (in grams) and a) Estimate the brain mass of a fetus that has a head circumference of 20 cm. Answer = b) Find the rate of change of the brain mass for a fetus that has a head circumference of 20 cm. Round to the nearest integer. Answer = c) Which of the following are correct stragetieslinterpretations for part b)? The question has multiple answers. Select all correct choices. The brain mass is not changing for a fetus that has a head circumference of 20 cm To find the rate of change of the brain mass, solve m(c) : 20 for c The unit for part b) is grams/ cm The unit for part b) is grams The brain of a fetus that has a head circumference of 20 cm is increasing To find the rate of change of the brain mass of the fetus, compute m ' (20) llll To find the rate of change of the brain mass of the fetus, compute m(20)