COVlD 20 produces automobile spare parts. Overhead is applied on the basis of machine hours required for cutting and fabricating. A predetermined overhead application rate of $15.00 per machine hour was established for 2019. Required: (Show your workings, You have the option to upload the workings) (a.) If 9,000 machine hours were expected to be used during 2019, how much overhead was expected to be incurred? (b.) Actual overhead incurred during 2019 totaled $135,000, and 9,200 machine hours were used during 2019. Calculate the amount of over- or underapplied overhead for 2019. (c.) If the amount of over-or underapplied overhead for 2019 was closed entirely in the cost of good sold account, what will be the effect on the company's net operating income