Use the Information Below to Answer the Following Questions Depreciation Has Been Calculated on a Straightline Basis

Use the information below to answer the following questions.
Y3 Ltd is expanding its production of binoculars. The plant is expected to cost $750,000, have a life of 5 years, and a nil residual value. It will be ready for operation on 31 December 2017. The following statement of comprehensive income figures for the new binoculars are forecast: $\begin{array}{llllll}&2018 & 2019 & 2020 & 2021 & 2022 \\&\$ \mathrm{~m} & \$ \mathrm{~m} & \$ \mathrm{~m} & \$ \mathrm{~m} & \$ \mathrm{~m}\\\text { Sales } & 1.5 & 1.3 & 1.4 & 1.2 & 1.1 \\\text { Costs (including depreciation) } & 1.0 & 1.0 & 1.0 & 1.0 & 1.0 \\\hline \text { Profit before tax } & \underline{0.5} & 0.3 & 0.4 & 0.2 & 0.1\end{array}$ Depreciation has been calculated on a straightline basis. You should assume that all cash flows occur at the end of the year in which they arise. The company's cost of capital is 10%. Ignore taxation.
-Refer to the table above. The accounting rate of return is:

A) 40%.
B) 80%.
C) 50%.
D) 30%.