_In backhand welding, the angle between the welding torch and the work is kept as$?

• A. 30¬¨‚àû-40¬¨‚àû
• B. 40¬¨‚àû-50¬¨‚àû
• C. 50¬¨‚àû-60¬¨‚àû
• D. 60¬¨‚àû-70¬¨‚àû