Identify the three phases of the law of variable proportions from the following and also give reason behind each phase.

Identify different phases of the law of variable proportions from the following schedule. Given reason for your answer. |{:("Variable Input (Units)"," Total Product (Units"),(" 1"," 4"),(" 2"," 9"),(" 3"," 13"),(" 4"," 15"),(" 5"," 12"):}|

What are the different phases in the law of variable proportions in terms of marginal product ? Give reason behind each phase. Use diagram.

Reasons For Law Of Variable Proportion