Use the Information Below to Answer the Following Question(s)

Use the information below to answer the following question(s) :
Kitchen Appliances Company manufactures two products: toaster ovens and bread machines. The following data are available:

The company can manufacture three toaster ovens per machine hour and two bread machines per machine hour. The company's production capacity is 1,200 machine hours per month.
-What is the contribution margin per machine hour for toaster ovens at the Kitchen Appliances Company?

A) $210
B) $140
C) $70
D) $390