Help with Diels-Alder Reactions Practice Test

A tricyclic system with two five-membered rings and a six-membered ring

A tricyclic system with a four-membered ring, a five-membered ring, and a six-membered ring

A tricyclic system with a five-membered ring and two six-membered rings

A bicyclic system with two six-membered rings

A bicyclic system with a five-membered ring and a six-membered ring