How many of the following systematic names are correct? Correct those that are misnamed.
(i) 2-ethylhept-3-yne
(ii) 2-methylpent-3-yne

• A. Two names are correct.
• B. One name is correct.
  Correct name for (i): 6-methyloct-4-yne.
• C. One name is correct.
  Correct name for (ii): 5-methylpent-2-yne.
• D. None are correct.
  Correct name for (i): 3-methyloct-4-yne
  Correct name for (ii): 4-methylpent-2-yne

Answer: (D)