KB) | + Alternative formats 6. Given the following Engel curve for steak. 30 20 10 12 Quantity a. Calculate the income elasticity along the segment of the curve from an income of 10 to 20. b. Is this an inferior good, normal good, or a luxury good? Why? c. Calculate the income elasticity along the segment of the curve from an income of 20 to 30? d. Is this an inferior good, normal good, or a luxury good? Why