In 2000, Bell Atlantic and GTE merged to form a giant telecommunications corporation named Verizon Communications. As expected, some equipment incompatibil.ities had to be rectified, especiall y for long distance and international wireless and video services. One item had two suppliers-a U.S. firm (A) and an Asian firm (B). Approximately 3000 units of this equipment were needed. Estimates for vendors A and B are given for each uniT. Use ROR incremental cash flow analysis. Determine and evaluate which vendor should be selected if the MARR is 15% per year. Draw the cash flow diagram