What is the angle between the drains and inspection manholes?

• A. 45‚àö√Ñ‚àö‚àÇ
• B. 90‚àö√Ñ‚àö‚àÇ
• C. 135‚àö√Ñ‚àö‚àÇ
• D. 180‚àö√Ñ‚àö‚àÇ