Hamzah Inc. reported the following information at the end of the first quarter of 2020, Sales $64661 Direct materials $9451 Direct labor $5341 Factory utilities (variable) $4308 Factory rent $7086 Sales staff salary $5666 Sales commission $2898 Office rent $3965 Answer the following questions (only input the numbers without any symbols or comma or other punctuation marks). (a) The total contribution margin is $ (b) The total net income at the end of the period is $ (c) The total selling and administrative expenses in the traditional approach income statement is $ (d) The total manufacturing costs in the traditional approach is $