If a corporation is subject to a 25% tax rate, why may it be advantageous for it

Question:

If a is subject to a 25% tax rate, why may it be advantageous for it to issue debt as opposed to preferred shares?
Corporation
A Corporation is a legal form of business that is separate from its owner. In other words, a corporation is a business or organization formed by a group of people, and its right and liabilities separate from those of the individuals involved. It may...