Cross elasticity of demand can be mathematically expressed as the

• A.\(\frac{\text{% change in quantity of commodity X}}{\text{% change in quantity of commodity Y}}\)
• B.\(\frac{\text{% change in quantity demanded}}{\text{% change in price}}\)
• C.\(\frac{\text{% change in quantity demanded of commodity X}}{\text{% change in price of commodity Y}}\)
• D.\(\frac{\text{% change in quantity demanded}}{\text{% change in income}}\)
• E.