DEF Inc. has beginning cash of $100,000. It expects sales of $300,000 in Month 1, $350,000 in Month 2, and $400,000 in Month 3. The company's collection pattern is 40% in the month of sale, 30% in the following month, and 30% two months after the sale. Purchases are expected to be $150,000 in Month 1, $180,000 in Month 2, and $200,000 in Month 3. The company expects to pay 50% of its purchases in the month of acquisition and the remaining 50% in the following month. What is the ending cash balance for Month 1? a. $180,000 b. $145,000 c. $200,000 d. $210,000