You must decide between two potential altematives. Your company requires the use of Present Worth Analysis. NOTE: The first alternative (which has an expected life of 14 years) has already been calculated for you. It was found to have NPW=S15,847 based on an MZARR=18% 4. The NPW (necersary to make a decision) for Altemative 12 is closest to. 6. The additional O&M cost in year one that would result in an 18% ROR is closest to... Note: Assume the costs continue to grow at a 7% anmal rate. a) $3,170 b) $4,164 c) 54,354 d) 55,849 e) 57,282 f) 51,287 g) 53,372 h) 53,516 i) $2,778 j) 53,438