In a race, five runners P, Q, R, S, and T finished in the following order: R finished before S but after P. Q finished before T. What is the correct sequence of their finishing?
From the set of items: 1, 2, 3, 4, and 5, the following conditions apply: 1) Item 1 cannot be selected if item 2 is selected. 2) Item 3 must be selected if item 4 is selected. 3) Item 5 can only be selected if item 1 is not selected. Which combination of items can be selected?