In a steam engine, one method of obtaining the earlier cut-off with a simple slide valve is by increasing the angle of advance of the eccentric while the throw of the eccentric, steam lap and exhaust lap are kept constant. This method will

• A. Reduce maximum opening of port to steam
• B. Cause withdrawing or throttling of steam
• C. All of these
• D. Reduce length of effective stroke of piston

Answer: (D)