(15) 3. Proposals A, B, C, D, E, F and G are being considered with money flows over 10 years Investment Net Annual Benefit Salvage Value $32,000 $12,000 $40,000 $50,000$15,000$52,000$28,000 $6,000 $2,500$10,000$12,000 S3,000 $13,000$7,500 0 $1,000 $3,000 $0$5,000$2,000 S500 Proposal (A and G) are mutually exclusive, (C and D) are also mutually exclusive, and proposal B depends on C or D. The MARR is set at 12%. a) Formulate the problem with Integer Programming. b) Which proposal(s) should be selected if the amount of money available for investment is $120,000