Abnormal demand refers to demand patterns that deviate from typical behavior, often influenced by specific factors, such as:

i. Goods of ostentation: These are luxury items sought after for their status, leading to demand that doesn't follow normal consumption patterns.
ii. Giffen goods: These are a unique category of inferior goods where demand increases as prices rise, defying standard economic expectations.
iii. Rare commodities: Scarcity can drive abnormal demand, as consumers often place higher value on items that are perceived as rare or hard to obtain.

The option that is not a reason for abnormal demand is A. price of the commodity.