FILL IN THE BLANK. Most labor economists believe that many adult males are on the vertical section of their labor supply curves. Explain when and why​ someone's supply of labor curve would be​ vertical, using the concepts of income and substitution effects.​Source: Robert​ Whaples, "Is There Consensus among American Labor​ Economists? Survey Results on Forty​ Propositions," Journal of Labor Research​, Vol.​ 17, No.​ 4, Fall 1996.Suppose an adult male is on the vertical section of their labor supply curve.If the wage decreases​, then the substitution effect would prompt the individual to work ____ hours and the income effect would prompt the individual to work _____ ​hours, with the size of the substitution effect being ______ the size of the income effect​ (in absolute​ value).