Austin General Hospital is evaluating new office equipment offered by six companies. Each company provides different office equipment with details as shown below: Equipment Required Investment Annual Savings over 10 years | $210 $150 B B $80 $70 $144 $60 D $45 $150 E $350 L $120 F $240 $200 Equipment A and B are mutually exclusive. Equipment C is contingent upon Equipment A. Equipment D and E are also mutually exclusive. Equipment F is contingent upon Equipment D. a. How many mutually exclusive decision alternatives are in the problem including the do-nothing alternative? List all decisions. [6 points] b. What is the total required investment for each alternative? nts] c. What is the total annual savings for each alternative? [3 points]