National Bal Swachhta Mission Delas with which of the following. (i) Clean air (ii) Clean water (iii) Clean food (iv) Clean Toilets.Which of the following is/are correct?

• A. (i), (ii) and (iii)   
• B. (i), (ii) and (iii)
• C. (i) and (iii)          
• D. All of the above