How many of the following systematic names are correct? Correct those that are misnamed.
(i) 4-propylpent-2-yne
(ii) 2-chlorohept-4-yne

• A. 1 name is correct.
  Correct name for (i): 4-methylhept-3-yne.
• B. 1 name is correct.
  Correct name for (ii): 5-chlorohept-4-yne.
• C. None is correct.
  Correct name for (i): 4-methylhept-2-yne.
  Correct name for (ii): 6-chlorohept-3-yne.
• D. None is correct.
  Correct name for (i): 4-methylhept-3-yne.
  Correct name for (ii): 5-chlorohept-4-yne.

Answer: (C)