Which of the following statements relating to income elasticity is true? A A positive value for the income elasticity coefficient indicates an interior good. If good X and good Y have negative Income elasticities, then both goods are substitutes. with an income elasticity coefficient of 0.6, the demand is inelastic and the good is an interior good, D with an income elasticity coefficient of 5, a 10 percent increase in income will lead to a 50 percent increase in the quantity demanded of the good. With an income elasticity coefficient of -1.2, a 10 percent increase in income will lead to a 12 percent decrease in the price of the good.