Acarpenter has driven four stakes into a level building lot for the corners of a rectangular building as shown in the figure. when she measures the diagonal distance from corner a to corner c, she gets a measurement of 40 feet. the distance from corner a to corner d is 24 feet. assume the stakes have been set properly and the corners of the rectangle are square. using the 3-4-5 rule, calculate the distance from corner c to corner d.

a. 24

b. 60

c. 32

d. 50