Which of the following are parts for an oil pressure governor in modern turbines?1. Servomotor, known as relay cylinder2. Oil sump3. Oil pump which is driven by belts connected to the turbine main shaft4. Draft tube

• A. 1, 2 and 3 only
• B. 1, 2 and 4 only
• C. 1, 3 and 4 only
• D. 2, 3 and 4.only