Notson, Inc. produces several models of clocks. An outside supplier has offered to

produce the commercial clocks for Notson for $$420$ each. Notson needs $1,200$

clocks annually. Notson has provided the following unit costs for its commercial

clocks:

What is the incremental effect on net income if Notson choses to outsource the

production of the $1,000$ clocks annually?

Should Notson make or buy the clocks?