Company XYZ made total sales revenue of $450,000. The variable manufacturing costs were $125,000 while the fixed manufacturing costs were $20,000. The variable selling and administrative expenses were $50,000 while the fixed selling and administrative expenses were $10,000. How much was the total contribution margin ($)? O a. 305,000 O b. None of the given answers O c. 390,000 O d. 275,000 O e. 325,000