An Experiment Was Performed Using 1000 Nonsmoking Males Ages 18

An experiment was performed using 1000 nonsmoking males ages 18 to 22.Which of the following experimental groups would most likely produce the most similar results?

A) 800 nonsmoking females ages 30 to 45
B) 800 smoking males ages 30 to 45
C) 1000 smoking females ages 25 to 40
D) 1000 nonsmoking males ages 30 to 55
E) 800 nonsmoking males ages 20 to 25