fast please!
Extracted text: A carpenter wishes to construct a ladder with nine rungs whose lengths decreases from 24 inches at the base to 18 inches at the top. If the lengths of the rungs form a GP, determine the length of the fifth intermediate rungs. Select one: O a. 19.7 in O b. 21.4 in O c. 20.8 in O d. 22.2 in