A survey on a sample of 25 new cars being sold at a local auto dealer was conducted to see which of three popular options, air-conditioning (A), radio (R), and power windows (W), were already installed. The survey found:
15 had air-conditioning (A),
12 had radio (R),
11 had power windows (W),
5 had A and P,
9 had A and R,
4 had R and W,
3 had all three options.
A. Construct a Venn diagram to illustrate the sets.