NC Durham 263016NC Greenville 91495SC Greenville 67453SC Sumter 40723 a. First.City=0 and Last.City=0 b. First.City=1 and Last.City=0 c. First.City=0 and Last.City=1 d. First.City=1 and Last.City=1 Using the default discrete method, Months2Pay is 2. Two end-of-month boundaries...