The Supreme Court of India in State of Bihar V. Kameshwar Singh (1952) laid down certain tests for discovering whether any particular act constitutes a colourable legislation.

A. The court must look into whether a legislature used wide or vague words or not which may extend the operation of an Act to subject?

B. The court must look into the substance of the law and not to its form or the label which the legislature has given it

C. The court must look at the object as well as the effect of the law

D. If the legislature proceeds under a legislative plan the court must read all the statutes constituting that plan and determine the combined effect

E. The court must look into that repugnancy is in existance?

Choose the most appropriate answer from the options given below: