4. Almojil and West, Inc. (A&W) is considering the three possible options shown below. A&W's MARR is 6%. Option A -$145,000 $22,000 1* Cost Annual Benefits LIFE Option D DO NOTHING Option B -$254.000 $31,500 10 years Option C -$352,000 $50,000 10 years 10 years a. Perform a Rate-of-Return Analysis to determine which options are viable. CAREFULLY EXPLAIN YOUR DECISIONS TO CONSIDER OR REJECT OPTIONS. You do NOT need to interpolate merely bracket any interest rates to within 1%. b. If more than one option is viable, perform an incremental rate-of-return analysis to determine which option should be chosen. c. Explain in 15 words or less what an internal rate of return is