In the nerve-cell activity of a certain individual fly, the time intervals between "spike" discharges tend to have a skewed right distribution with a mean of 15.6 ms and a standard deviation of 0.4 ms. Let Y denote a randomly selected interspike interval. According to the Empirical Rule which statement is correct. Option A 68% of the interspike interval are between 15.2 ms and 16 ms. Option B 95% of the interspike interval are between 14.3 ms and 16.3 ms. Option C 99.7% of the interspike interval are between 15.2 ms and 16 ms. Option D Empirical Rule cannot be applied.