Company XYZ made total sales revenue of $500,000. The variable manufacturing costs were $135,000 while the fixed manufacturing costs were $20,000. The variable selling and administrative expenses were $51,000 while the fixed selling and administrative expenses were $10,000. How much was the total contribution margin ($)? O a. None of the given answers O b. 365,000 OC 314,000 O d. 345,000 O e. 439,000