Deat @Mahil:
Great Question! The answer choices - they all make logical sense.
Let's examine each answer choice:
(A) 8.5 (19.60 ft * .75 Pump efficiency = 14.7 ft. Note: The probability of an examinee choosing Choice A is about 25%)
(B) 11 (19.60 ft * .75 Pump efficiency = 14.7 ft...