premise: From a group of seven people—J, K, L, M, N, P, and Q—exactly four will be selected to attend a diplomat's retirement dinner. Selection must conform to the following conditions: Either J or K must be selected, but J and K cannot both be selected. Either N or P must be selected, but N and P cannot both be selected. N cannot be selected unless L is selected. Q cannot be selected unless K is selected. There is only one acceptable group of four that can be selected to attend the retirement dinner if which one of the following pairs of people is selected?
hypothesis: M and Q