question_answer

Which of the following are the rules of programming NC machine tools in APT language?

1. Only capital letters are used

2. A period is placed at the end of each statement

3. Insertion of space does not affect the APT word.

Select the correct answer using the codes given below;

A) 1 and 2            

B) 2 and 3

C) 1 and 3            

D) 1 alone