please solve the following question

Q. Kulp Corporation has two major business segments-East and West. In July, the East business segment had sales revenues of $900,000, variable expenses of $441,000, and traccable fixed expenses of $171,000. During the same month, the West business segment had sales revenues of $450,000, variable expenses of $234,000, and traceable fixed expenses of $45,000. The common fixed expenses totaled S321,000 and were allocated as follows: $180,000 to the East business segment and $141,000 to the West business segment. (Required) a. The contribution margin of the West business segment is: b. The contribution margin of the East business segment is: c. The net operating income of the company as a whole is