The following information relates to a project

The cost of capital is $10\%$

Advice management on the optimum time the project should be abandoned :

a$.$ Optimum time is at the end of year $1$

b$.$ Optimum time is at the end of year $4$

c$.$ Optimum time is at the end of year $3$

d$.$ Optimum time is at the end of year $2$