[6]

The demand for goodXis given by: QXd= 1,800 - 0.64PX- 0.23PK+ 0.27L+ 0.32M, where PXis the price of good X, PKis the price of good K, PLis the price of good L, and M is income.Which of the following statements is correct?

Group of answer choices

Goods X and K are complements; goods X and L are substitutes; good X is an inferior good.

Goods X and K are substitutes; goods X and L are complements; good X is a normal good.

Good X is an inferior good, but more information is needed to know the relationship between goods X and K and between goods X and L.

Goods X and K are substitutes; goods X and L are complements; good X is an inferior good.

Goods X and K are complements; goods X and L are substitutes; good X is a normal good.

Good X is a normal good, but more information is needed to know the relationship between goods X and L and between goods X and K.