In a race, the following conditions are true: Runner X finished before Runner Y but after Runner Z. Runner W finished last. Who finished second?

A. X

In a race, Alice finished before Bob but after Charlie. David finished after Bob. Who finished first?

C. CHARLIE

In a sales competition, Tom sells more than Jerry but less than Alice. Bob sells less than Jerry. Who sells the most?

C. ALICE

In a family, there are four members: a father, a mother, a son, and a daughter. The father is not the son. The mother is not the daughter. Who is the son?

C. SON

In a row of chairs, A is sitting to the left of B and to the right of C. D is sitting to the right of A. Who is sitting in the middle?

A. A