In lochner v. new york, the supreme court ruled against a 10-hour workday law for bakers, saying that states could not a. deprive businesses of property without due process of law. b. restrict the rights of employers and workers to sign any type of labor agreement. c. allow master and employee to contract with each other.

The correct answer here is B.
This landmark labor law case from 1905, which has since been overturned, saw the Supreme Court rule that Lochner was correct in saying that the law from New York which restricted the working hours of bakers to 10 hours was unconstitutional as it was wrong use of government power and that the government has to no right to restrict the labor agreements between the individuals.