a pharmaceutical sales rep will be responsible for 4 different products. She must select 1 pain reliever, 1 antidepressant, 1 allergy medicine, and 1 high cholesterol medicine. If her company manufactures 7 types of pain relievers, 3 types of antidepressants, 6 types of allergy medicine, and 2 types of cholesterol medicine, how many different sales portfolios are poosible?