Veggie Burgers, Inc., would like to maintain their cash account at a minimum level of $200,000, but expect the standard deviation in net daily cash flows to be $15,000, the effective annual rate on marketable securities to be 2.5 percent per year, and the trading cost per sale or purchase of marketable securities to be $50 per transaction. What will be their optimal upper cash limit? Assume 365 days in a year. Carry your calculations to 7th place after the decimal point for intermediate steps. Select one: a. $350,374.84 b. $347,086.38 c. $352,101.16 d. $347,889.13 e. $349,852.14 f. $348,125.75