To find the percentage return of an investment

- divide the dollar return by the investment's value at the beginning of the period.

- multiply the dollar return by the investment's value at the end of the period.

- multiply the dollar return by the investment's value at the beginning of the period.

- divide the dollar return by the investment's value at the end of the period.

- divide the dollar return by the investment's value at the beginning of the period.

Explanation:

For computing the percentage of return of an investment, we need to apply the formula which is shown below:

Return on investment = (Return) : (investment value)

where,

Return shows the benefit or the profit earned or it can be the net profit whereas investment shows the original cost of the investment

Hence, option a is correct