Complete the two-way frequency table below, which shows the relationship between adults' gender and whether these adults buy a condo or a house. From a sample of 84 adults, the following data are collected:
House Condo Total
Female 18 36 54
Male 10 20 30
Total 28 56 84
What is the probability (rounded to the nearest whole percent) that an adult will be a male given that he or she purchases a house? Are the events being male and buying a house independent?
A:33%; they are not independent
B:36%; they are not independent
C:12%; they are independent
D:36%; they are independent
