To Derive the Demand Curve for a Good,which of the Following

Multiple Choice

To derive the demand curve for a good,which of the following must be the case

A) The income effect must be greater than the substitution effect.
B) The substitution effect must be greater than the income effect.
C) The substitution effect must be in the same direction as the income effect.
D) The income effect and the substitution effect may be in the same or in opposite directions.