Read the following statements:Statement: 1. An Abacus is made of beads and wires.Statement: 2. An Abacus is made of semiconductor devices.Statement: 3. An Abacus is an electronic calculating device.Which one of the following is correct about the above statements?

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