Wholemark is an internet order business that sells the popular New York greeting cardonce a year. The cost of paper on which the card printed is $0.05 per card, and the cost of printing is $0.15 per card. The company receives $2.15 per card sold. Since card have the current year printed of them, unsold cardshave no salvage value. The customers are from the four areas: Los Angeles, Santa Monica,Hollywood, and Pasadena. Based on the past data, the number customers form each of the four regions is normally distributed with mean 2,000 and standard deviation 500. (Assume these four are independent). What is the optimal production quantity of the card?