The 150 residents of the town of Wonderland were asked their age and whether they preferred vanilla, chocolate, or swirled frozen yogurt. The results are displayed next. Under 25 years old At least 25 years old Chocolate 40 15 Vanilla 20 40 Swirl 15 20 What is the probability a randomly selected customer prefers chocolate given he or she is at least 25 years old? 0.77 0.10 0.27 0.20