Table on the right shows the net cashflow (NCF) and cumulative cashflow for two projects X and Y. Answer the following questions. 1- Based on Descarte's rule of signs, what is the max. number of real ROR (i*) for project X? (put numerical number) 2- Looking at cumulative CF of project X, can we tell that it has only one positive i* value? (put "yes" or "no") Project X Year NCF Cumulative CF Project Y NCF Cumulative CF 20,000 20,000 0 -180 -180 1 50 - 130 16,000 36,000 2 50 -80 -36,000 0 3 50 -30 25,000 25,000 3- Based on Descarte's rule of signs, what is the max. number of real ROR (i*) for project Y? (put numerical number) 4 50 20 -30,000 -5,000 4- Looking at cumulative CF of project Y, can we tell that it has only one positive i* value? (put "yes" or "no")