The drama club is having a fundraiser selling novelty cups. Their goal is to make a profit of $1000. If they receive $3.50 profit for each cup (c), how many cups do they need to sell to make a profit of $1000? Which equation could be used to find c, the number of cups they need to sell?

A) $3.50+c=$1000
B) $3.50-c=$1000
C) $1000-$3.50=c
D) $1000/$3.50=c