The expected return for the Neville Company is 8% and the standard deviation is 7.5%. Assuming a normal distribution, it is 99.7% likely that the actual return will be between:

A +30.5% (best) to -14.5% (worst)

B +23% (best) to -7% (worst)

C +15.5% (best) to 0.5% (worst)

D +8% (best) to -7.5% (worst)