X Co. has the following information:

Sale $ 1,200,000

Cost of sales $800,000

Operating expenses $200,000

interest expense $ 20,000

Tax $ 10,000

current liabilities $120,000

Non-current liabilities $200,000

share capital $ 500,000

Retained earnings $ 300,000

the returns on capital employed ratio is

a.

17%

b.

21.25%

c.

15.18%

d.

1.5 x