Consider the following statements :Statement 1: A computer is used for billing at the shops.Statement 2: A computer is used for booking tickets at railway station.Statement 3: A computer is used by Doctors to diagnose the diseases.Which one of the following is correct about the above statements?

• A. Statement 1 is true
• B. Statement 2 is true
• C. Statements 3 is true
• D. All are true
• E. None of these