The following simple model is used to determine the annual savings of an individual on the basis of his annual income and education. Savings = β0 + 0 Edu + β1Inc + uThe variable 'Edu' takes a value of 1 if the person has a college education, and 0 if they do not. The variable 'Inc' measures the income of the individual.Refer to the model above. The benchmark group in this model is _____.a.the group of non-college educated peopleb.the group of individuals with a high incomec.the group of college educated peopled.the group of individuals with a low income