Read the following statements : Assertion (A) and Reason (R). Choose one of the correct options given below : Assertion (A) : If the value of Marginal Propensity to Save is 0.5, Marginal Propensity to Consume will be equal to Marginal Propensity to Save. Reason (R) : Sum of Marginal Propensity to Consume and Marginal Propensity to Save always equals to unity.