The ratio of height of Porter governor (when length of arms and links are equal) to the height of Watt's governor is (where m = Mass of the ball, and M = Mass on the sleeve)

• A. <img src="/_files/images/mechanical-engineering/theory-of-machines/501-333-1.png">
• B. <img src="/_files/images/mechanical-engineering/theory-of-machines/501-333-2.png">
• C. <img src="/_files/images/mechanical-engineering/theory-of-machines/501-333-3.png">
• D. <img src="/_files/images/mechanical-engineering/theory-of-machines/501-333-4.png">