Kindly help me about this case. ABC Corporation needs $400,000$ pesos cash per year to support its annual expenditures and operating expenses. If ABC has excess cash, it is invested in a money market fund that earns $5\%$ interest per annum. Converting securities into cash would cost ABC $400$ pesos per transaction. Question is $1.$ What is the optimal cash balance of ABC Corporation $2.$How many times in a year will ABC convert its investments in money market fund into cash to satisfy the annual cash requirement of $400,000$ pesos? $3.$ How much is the total conversion costs of ABC Corporation and $4.$ How much is the total opportunity cost of not investing the excess cash in the money market fund?