$4$ firms. YOURS currently rengires $$50\frac{K}{y}r$ to run $+$$$\frac{10}{?}$ transaction

Alternative $1$: $$75\frac{K}{y}r$ with $$\frac{5}{?}$ transaction

Alternative $2$: $$60\frac{K}{y}r$ with $$\frac{6\mathrm{.}75}{?}$ transaction

Alternative $3$: $$80\frac{K}{4}r$ with $$\frac{1\mathrm{.}75}{?}$ transaction

What should I do$?$

Assume I made $3500$ this year and will make $4500$ next year.