Consider the following statements 1. Koppen's climate classification is based on annual and monthly means of temperature and precipitation. 2. Koppen used annual and monthly means of temperature and precipitation for all the climates of the world including those of India. Which of the above statements is/are correct?

• A.  1 only      
• B.  2 only
• C.  Both 1 and 2    
• D.  Neither 1 nor 2