Consider the following statements and select the correct answer using the code given below: 1. Effective literacy rate is defined as the percentage of literates to population aged 7 years and above. 2. Crude literacy rate is defined as the percentage of literates to the total population of the country. 3. Work participation is defined as the percentage of total main workers. 4. Work participation rate is defined as the percentage of total workers (main and marginal) to total population. Code:

• A.  1, 2 and 3 are correct    
• B.  1, 2 and 4 are correct
• C.  1, 3 and 4 are correct    
• D.  2, 3 and 4 are correct