c$.$ An$$ auditor's principal objective in analyzing repairs and maintenance expense accounts is to

$1.$

determine that all obsolete$$ property, plant, and equipment assets were written off before the$$ year$-$end.

$2.$

identify$$ property, plant, and equipment assets that cannot be repaired and should be written off.

$3.$

discover expenditures that were expensed but should have been capitalized.