What is the minimum cost of crashing the following project that Roger Solano manages at Slippery Rock University by 4 days? \begin{tabular}{cccccc} \hline Activity & NormalTime(days) & CrashTime(days) & NormalCost & TotalCostwithCrashingImmediatePredecessor(s) \\ \hline A & 6 & 5 & $800 & $1,100 & - \\ B & 9 & 7 & $300 & $400 & - \\ C & 4 & 3 & $600 & $650 & - \\ D & 7 & 4 & $750 & $1,500 & A \\ E & 8 & 6 & $1,200 & $1,650 & C \\ \hline \end{tabular} By how many days should each activity be crashed to reduce the project completion time by 4 days? Fill in the table below. (Enter your responses as whole numbers.)