In its year end financial statements, Naperville, Inc. reported cash of $4,707 million. The statement of cash flows reports the following (in millions): Net cash from operating activities $4,644 Net cash from investing activities (1,551) Net cash from financing activities (4,164) What was the balance in Naperville's cash account at the start of the current year? Select one: O a. $1,071 million O b. $9,351 million O c. None of the above O d. $5,778 million e. $3,636 million