Two political candidates are vying for town mayor, and the key issue is how much to spend on the annual Fourth of July fireworks. Among the 100 voters, 40 want to spend $30,000, 30 want to spend $10,000, and 30 want to spend nothing at all. What is the winning position on this issue?

a. $10,000

b. $15,000

c. $20,000

d. $30,000