When the cross-price elasticity EPX = -3: a. demand rises by 3% with a 1% increase in the price of X b. the quanitty demanded decreases by 3% with a 1% increase inthe price of X c. the quantity demanded rises by 1% with a 3% increase in theprice of X d. demand decreases by 3% with a 1% increase in the price ofX . . .