$7)$ A manager is deciding between two marketing plans:

$$ Plan A will generate net returns of $$110,000$ two years from now and $$30,000$ four years from now.

$$ Plan B will generate net returns of $$25,000$ one year from now and $$110,000$ three years from now.

The required rate of return is $8\mathrm{.}00\%.$

a$)$ What is the discounted cash flow $($DCF$)$ of Campaign A$?2$ marks

b$)$ What is the discounted cash flow $($DCF$)$ of Campaign B$?2$ marks

c$)$ Which campaign is economically better for the company? Why? $1$ mark