Consider the following statements. I. Training is required at different levels, namely, for unskilled worker, semi-skilled workers, skilled workers, office, staff, supervisory staff and managerial. II. Semi-skilled workers are selected amongst the unskilled workers who have made themselves convergent with the handling of the machine. Which of the statements given above is/are correct?

• A.  Only I             
• B.  Only II
• C.  Both I and II                
• D.  None of the above