Francois and Camille Merrit recently inherited a substantial amount of money from a deceased relative. They want to use part of this money to establish an account to pay for their daughter's college education. Their daughter, Lisa, will be starting college five years from now. The Merrits estimate that her first year college expenses will amount to $13,000 and increase $2,000 per year during each of the remaining three years of her education. The following investments are available the Merrits. The Merrits want to determine an investment plan that will provide the necessary funds to cover Lisa's anticipated college expenses with the smallest initial investment. (Let Aj= investment in year f into investment A in thousands of dollars, Bj= investment in year / into investment B in thousands of dollars, Cj= investment in vear f into investment C in thousands of dollars, and Dj= investment in year f into investment D in thousands of dollars.) (a) Formulate an 19 model for this problem to find the smoliest initial investment (in thousands of dollars). Cash Flow Year 4 Cash Flow Year 5 Cash Fow Year 6 Cash Flow Year? Cast Flow Year 8 Cash Flow Year 9 A,Bi,C,,D>0 (b) Create a spreadsheet model for this problem and solve it using Solver. What is the optimal solution? (Round your answers to three decimal places.) (A1,A3,A3,A4,A5,A6,A3,A3,B1,B3,B5,B3,C3,C4,D1)=(