$\$ 50,000$ is to be spent on a machine having a life of five years and a residual value of $\$ 5,000$. Operating cash inflows will be the same each year, except for year 1 when the figure will be $\$ 6,000$. The accounting rate of return (ARR) is measured as average annual profit as a percentage of the initial investment. If the ARR is $30 \%$ then identify the payback period:

A. 2.75 years 

B. 2.15 years 

C. 1.85 years 

D. 2.54 years