ANSWER: C. a chicken burger with mustard on a multigrain bread
EXPLANATION:
Mayonnaise has a much higher fat and calorie content than mustard. Commercial mayonnaise is typically 70-80% fat, including lots of artery-clogging saturated fat. One tablespoon of mayo packs about 90 calories and 10 grams of fat versus 5 to 10 calories and less than one gram of fat for a tablespoon of yellow mustard.
A serving of chicken provides fewer calories, as well as less cholesterol and saturated fat than beef