QUESTION $4[9$ MARKS$]$BT & W has $400$ watches that cost P$150$ each to manufacture. The watches are out of fashionand cannot be sold in their current state. However, they can be redesigned at an additional cost ofP$40$ per watch and then sold for P$180$ each. Alternatively, the watches can be donated to charityfor a net financial benefit of $20\%$ tax reduction of the original production cost.Requireda$)$ Identify a sunk cost for BT & W $($Provide a reason for your answer$)(2$ marks$)$b$)$ Identify a relevant cost$)$ Provide a reason for your answer$)(2$ marks$)$c$)$ In your opinion which option should the company take? $(1$ mark$)$d$)$ Calculate the opportunity cost associated with donating the watches $(4$ marks$)$