NEX Ltd is evaluating the investment in robotic manufacturing equipment. NEX Ltd wishes to evaluate whether the company should lease or borrow and purchase the equipment. The cost is R$10$m$.$ Loan finance is available at an interest rate of $9\mathrm{.}72222\%,$ which is the company's marginal before$-$tax borrowing rate. The corporate tax rate is $28\%.$ Alternatively, the equipment can be leased at annual lease instalment of R$2\mathrm{.}2$m over $4$ years, but each lease instalment is payable in advance at the beginning of the year. Any tax effect occurs at the end of each year. At the end of the lease, the equipment is returned to the lessor. If purchased, the equipment qualifies for the S$12$C depreciation allowance of $40\%$ of cost in the first year and $20\%$ per year thereafter in years $2$ to $4.$ The residual value is expected to be zero at the end of year $4.$ What is the net advantage of leasing $($NAL$)?$

A$.$ R$1692824$

B$.$ R$1797347$

C$.$ R$1970262$

D$.$ R$1838881$

E$.$ R$1523410$