Answer:
A) Less of good x and more of substitute goods.
Explanation:
The substitution effect refers to the phenomenon that occurs when the demand for a product decreases because consumers turn to cheaper substitutes. This effect is related with the concept of elasticity of demand. A product with high elasticity, (elastic) will see the demand for it go down if the price goes up.
For example, if the price of a particular brand of soap goes up, the its demand will go down because people will substitute it with other brands.