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A certain group of test subjects had pulse rates with a mean of 84.2 beats per minute and a standard deviation of 11.3 beats per minute, Use the range rule of thumb for identifying significant values to identify the limits separating values that are significantly low or significantly high, Is a pulse rate of 76.8 beats per minute significantly low or significantly high? Significantly low values are beats per minute or lower. (Type an integer or a decimal. Do not round.) Significantly high values are |beats per minute or higher. (Type an integer or a decimal. Do not round.) Is a pulse rate of 76.8 beats per minute significantly low or significantly high? O A. Neither, because it is within two standard deviations of the mean. O B. Significantly high, because it is more than two standard deviations above the mean O C. Significantly low, because it is more than two standard deviations below the mean O D. It is impossible to determine with the information given