Which of the following could cause an increase in the demand for peanut butter? instructions: you may select more than one answer. click the box with a check mark for correct answers and click to empty the box for the wrong answers. an increase in the price of jelly (a complement). unchecked a decrease in the price of peanut butter. checked an increase in the expected future price of peanut butter. checked an increase in the number of buyers in the market. checked an increase in consumer incomes (if peanut butter is a normal good). checked which of the following could cause a decrease in the demand for jelly? instructions: you may select more than one answer. click the box with a check mark for correct answers and click to empty the box for the wrong answers. an increase in the price of peanut butter (if peanut butter and jelly are complements). checked a news report that jelly is hazardous. checked a decrease in income, if jelly is an inferior good. unchecked an increase in the price of jelly. checked a decrease in the expected future price of peanut butter.