The difference between while structure and do structure for looping is .................

• A. in while statement the condition is tested at the end of first iteration
• B. in do structure the condition is tested at the beginning of first iteration
• C. the do structure decides whether to start the loop code or not whereas while statement decides whether to repeat the code or not
• D. in while structure condition is tested before executing statements inside loop where as in do structure condition is tested before repeating the statements inside loop