Standard deviation is 18% and expected return is 15.5% then coefficient of variation would be

The correct answer is B. 1.16%.

The coefficient of variation is a measure of the relative dispersion of a set of data points, expressed as the ratio of the standard deviation to the mean. It is a unitless measure, so it can be used to compare the variability of different sets of data with different units of measurement.

In this case, the standard deviation is 18% and the expected return is 15.5%. The coefficient of variation is therefore:

$CV = \frac{18\%}{15.5\%} = 1.16$

This means

Option A is incorrect because it is the standard deviation, not the coefficient of variation.

Option C is incorrect because it is the expected return, not the coefficient of variation.

Option D is incorrect because it is a negative number, which is not possible for the coefficient of variation.