Regarding an Increase in Wage, Which of the Following Is

Regarding an increase in wage, which of the following is INCORRECT?

A) The wage increases will reduce output, therefore total costs will be reduced as well.
B) In a perfectly competitive industry, the wage increases will reduce output, which raises the market price of the product.
C) In the case of wage increases, the scale effect and the substitution effect work in the same direction to reduce labour demand.
D) In a perfectly competitive industry, the wage increases shift up the firm's marginal and average cost curves.
E) In a monopoly, the wage increases will raise the product price and reduce output.