Assume that Joy's Bridal uses up cash at a rate of $120,000 per year. The interest rate is 5% and each sale of securities costs $15. What is Joy's optimal cash balance and how many times a year should she sell securities? $2,828.43, 42.43 times. $2,190.89, 54.77 times $10,000, 12 times $8,485.28, 14.14 times