Q4. The population of systolic blood pressures for patients who are hospitalized after being infected with a novel virus is known to be normally distributed with mean 1m mm Hg. and standard deviation 12 mm Hg. The distribution of the sample mean, for samples of size n:36 that are collected from this population, is A. Exactly Nil]. 1) B. Approximately N('l?[i, 2) C. Exactly M170, 4) D. Approximately NUTD, 4)