Which of the following is not a member of the vitamin B complex?

Which of the following is not a member of the vitamin B complex?

مندرجہ ذیل میں سے کون وٹامن بی کمپلیکس کا رکن نہیں ہے؟
Explanation

Vitamin C also known as ascorbic acid is a water-soluble vitamin that is naturally present in some foods, added to others, and available as a dietary supplement.

The Vitamin B complex refers to all of the known essential water-soluble vitamins except for vitamin C