Gina Chuez has considered starting her own custom greeting card business. With an initial start up cost of $1500, she figures it will cost $0.45 to produce each card. In order to remain competitive with the larger greeting card companies, Gina must sell her cards for no more than $1.70 each. To make a profit, her income must exceed her costs. How many cards must she sell before making a profit? a.at least 1187 cardsc.at least 1200 cardsb.at least 1230 cardsd.at least 1425 cards