Isoquants can be​ convex, linear, or​ L-shaped. What does each of these shapes tell you about the nature of the production​ function? What does each of these shapes tell you about the​ MRTS? ​(For each of the​ following, enter the letter of the description that best describes each type of​ isoquant.)

Oz makes lion food out of giraffe and gazelle meat. giraffe meat has 18 grams of protein and 36 grams of fat per pound, while gazelle meat has 36 grams of protein and 18 grams of fat per pound. a batch of lion food must contain at least "46,800" grams of protein and 70,200 grams of fat. giraffe meat costs $1/pound and gazelle meat costs $2/pound. how many pounds of each should go into each batch of lion food in order to minimize costs? hint [see example 2.]