Which of the following is an example of the precautionary demand for money? A.Carla keeps $ 2 comma 000 in a bank account in case of emergencies. Carla keeps $ 2 comma 000 in a bank account in case of emergencies. B. Joan believes that gold is an excellent store of value. C.Marianne uses money in her checking account to buy groceries every week. Marianne uses money in her checking account to buy groceries every week. D.Since the stock market has been volatile lately comma Jean holds most of her savings in a bank account. Since the stock market has been volatile lately comma Jean holds most of her savings in a bank account