Four friends, Lisa, Mark, Nina, and Oliver, are ranked based on their scores in a quiz. Lisa scored higher than Mark but lower than Nina. Oliver scored the lowest. What is the correct order of their scores from highest to lowest?
A selection of three fruits is to be made from the following: Apple, Banana, Cherry, Date, and Elderberry. The conditions are: 1) Apple and Banana cannot be selected together. 2) Cherry must be included if Date is included. 3) Elderberry can be included only if Banana is not included. Which of the following selections is valid?