This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Which one of the following statement is true? 
Select and explain. 
A. The standard error of the mean (SEM) is generally larger than the standard detion (SD)., B. The standard error of the mean provides a measure of the spread of observation around the mean, C. The mean and standard detion of random sample will generally be different from the mean and standard detion of the population., D. The coefficient of variation is derived from the range.
C: The mean and standard detion of random sample will generally be different from the mean and standard detion of the population.
Answer: C: The mean and standard detion of random sample will generally be different from the mean and standard detion of the population. 
Explanation: The mean and standard detion of random sample will generally be different from the mean and standard detion of the population. * The standard error (SE) measures the variability of sample statistic in relation to the true population characteristic (how accurate the sample mean is as an estimate of the population mean.). * The SEM is generally smaller than the standard detion (SD). * The standard detion is the measure of the variability of the observations. * Standard error (SE) = * coefficient of variation = 100