Webber Fabricating estimated the following annual costs. Expected annual direct labor hours 40,000 Expected annual direct labor cost $ 625,000 Expected machine hours 20,000 Expected material cost for the year $ 800,000 Expected manufacturing overhead $1,000,000 Required a. Calculate overhead allocation rates using each of the four possible allocation bases provided. b. Determine the cost of the following job (number 253) using each of the four overhead allocation rates. Job 253 Direct materials $3,000 Direct labor (150 hrs @ $12/hr) $1,800 Machine hours used 150