What is meant by a shrouded turbine?

• A. The turbine blades are shaped so that their ends form a band or shroud.
• B. The turbine wheel is enclosed by a protective shroud to contain the blades in case of failure.
• C. The turbine wheel has a shroud or duct which provides cooling air to the turbine blades.
• D. A separate shroud around the hub for lubrication

Answer: (A)