A Pharmaceutical Company Wants to Answer the Question Whether It

A pharmaceutical company wants to answer the question whether it takes longer than 45 seconds for a drug in pill form to dissolve in the gastric juices of the stomach.A sample was taken from patients taken the given drug in pill form and times for the pills to be dissolved were measured.State assumptions of the test.
I.The subjects must be part of a medical study group investigating the drug.
II.The subjects in the sample must be randomly selected from a population.
III.The sample data must come from a normally distributed population of observations for
The variable under study.

A) I only
B) II only
C) III only
D) II and III
E) None of these