If the company builds a big plant, what's the projected net total cash flow $(10$ years$)?(1.$A$).$ Consider: high average demand yield cash flow of $$1,000,\frac{000}{y}r,P_H=\mathrm{.}8(80\%)$; low average demand yield cash flow of $100,\frac{000}{y}r,P_L=\mathrm{.}2(20\%)$ building a big plant cost $3,000,000$