Entire thing is one problem , please answer completely

Nlocaion base overhead co $623,700 Essmated total amount of the allocaton base 81000 machine. hours $619,500 8 Actual total amount of the allocaton base 87,000 machine hours (a) By how much is the manufacturing overhead underapplied or overapplied? (b) Why is the amount of underapplied (overapplied) manufacturing overhead different from Requirement 2 above? (You may seleet more than one answer. Single click the box with the question mark to produce a cheok mark for a correct answer and double eliek the box with the question mark to empty the box for a wrong answer.) The predetermined overhead rate changed The change in the actual manufacturing overhead cost deectly resulted in a corngwable change n the amount of unde appled loweapie mandachmgonhid The mar ufacturing overhead appled changed Refe eBook &Resourees