Question ID:PT42 S4 Q9 Passage:In a recent study, each member of two groups of people, Group A (composed of persons sixty-five to seventy-five years old) and Group B (composed of college students), was required to make a telephone call to a certain number at a specified time. The time when each call was initiated was recorded electronically. Group A proved far better at remembering to make a telephone call precisely at a specified time than did Group B. There were fourteen lapses in Group B but only one lapse in Group A. Clearly, at least one type of memory does not suffer as a person ages. Stem:Which one of the following, if all of them are true, is LEAST helpful in establishing that the conclusion above is properly drawn? Correct Answer Choice:BChoice A:There was the same number of people in each group. Choice B:The same group of researchers answered the calls made by the callers in both study groups. Choice C:Among the college students there were no persons more than forty years old. Choice D:Both groups had unrestricted access to telephones for making the required calls. Choice E:The members of the two groups received their instructions approximately the same amount of time before they were to make their telephone calls.