Solve A$,$ B $,$ C Kimpel Products makes pizza ovens for commercial use. James Kimpel, CEO, is contemplating producing smaller ovens for use in high school and college kitchens. The activities necessary to build an experimental model and related data are listed in the following table: Total Cost Normal Time Crash Time Normal with Activity $($weeks$)($weeks$)$ Cost Crashing immediate Predecessor$($s$)$ $$1,200$ $$1,850$ $$2,300$ $$3,050$ $$400$ $$400$ $$1,300$ $$1,600$ $$900$ $$1,050$ $$4,500$ $$5,500$ $$1,800$ $$2,400$ D$,$ E