The standards to produce one unit of FaEzzy are shown below. The company actually produced 3,600 units. The actual number of machine hours used was 4,450 hours. The actual cost of manufacturing overhead was $2,002.50. What is the manufacturing overhead efficiency variance? $31.25F $25.00U $25.00F $31.25U The standards to produce one unit of FaEzzy are shown below. The company actually produced 4,500 units. The actual number of machine hours used was 10,500 hours. The actual cost of manufacturing overhead was $1,575. What is the manufacturing overhead rate variance? $525F$1,050F$525U$1,050U