Maria Stevens works as a manager in Coquitlam Grill. She is always analyzing void sheets that show the portions of grilled steaks that have to be discarded because they were returned from the dining room where the guests rejected them. Maria knows that such portions

a.

do not affect the food cost percentage.

b.

decrease food cost percentage.

c.

increase food cost percentage.

d.

are normal returns and do not require investigation.