A trader buys two July futures contracts on frozen orange juice. Each contract is for the delivery of 15,000 pounds. The current futures price is 160 cents per pound, the initial margin is $6,000 per contract, and the maintenance margin is $4,500 per contract. What price change would lead to a margin call?

	a.	If orange juice increases by more than 20 cents this will lead to a margin call
	b.	If orange juice increases by more than 10 cents this will lead to a margin call
	c.	If orange juice falls by more than 20 cents this will lead to a margin call
	d.	If orange juice falls by more than 10 cents this will lead to a margin call