WestJet Airlines Ltd. needs to raise some funds to finance the purchase of a fleet of energy-efficient aircraft to replace the current fleet of aging planes. WestJet is planning on issuing bonds to finance this proposal. You are the CFO of WestJet. What would be the best type of bond to issue? As an investor, what would be the best type of bond to purchase in this case?

The best type of bond for WestJet to issue would be a