Correct Option: B

The demand of commodity mainly stems from the consumption capacity of the buyer. Demand is equal to desire plus ability to pay plus will to spend. Demand for a commodity depends upon number of factors called Determinants. The demand function can be symbolically expressed as: Q_dN= f (P_N, P_R, I, T, E, O) where, Q_dN = Quantity demanded for the commodity; P_N = Price of the commodity; P_R = Price of related commodity; I = Income of consumers; T = Taste & Preferences of the consumers; E = Expectations about the future prices; and O= other factors.