present worth for both projects, which one is better.

second part is with ten year planning, present work of both projects again

\begin{tabular}{ccccc} & & & \multicolumn{2}{c}{ B2 } \\ n & Cash Flow & Salvage Value & Cash Flow. & Salvage Value \\ \hline 0 & $15,000 & & $19,000 & \\ 1 & 2,200 & 7,500 & 2,200 & 8,000 \\ 2 & 2,200 & 5,000 & 2,200 & 5,500 \\ 3 & 2,200 & 3,000 & 2,200 & 3,000 \\ 4 & 2,200 & 1,000 & & \\ 5 & 2,200 & 500 & & \\ \hline \end{tabular} (a) Assuming an infinite planning horizon, which project is a better choice at MARR =11% ? Use 15 years as the common analysis period. The present worth for project B1 is $ thousand. (Round to one decimal place.)