please, I need help with this. How I get this correct answer?

A company's planned activity level for next year is expected to be 100,000 machine hours. At this level of activity, the company budgeted the following manufacturing overhead costs: A flexible budget prepared at the 110,000 machine hours level of activity would show total manufacturing overhead costs of: Selected Answer: d. $370,000 Answers: a. $300,000 b. $400,000 c. $430,000 d. $370,000