The ratio of depths at partial flow with central angle and at full flow of a sewer, is

• A. <img src="/_files/images/civil-engineering/waste-water-engineering/182-9.49-1.png">
• B. <img src="/_files/images/civil-engineering/waste-water-engineering/182-9.49-2.png">
• C. <img src="/_files/images/civil-engineering/waste-water-engineering/182-9.49-3.png">
• D. <img src="/_files/images/civil-engineering/waste-water-engineering/182-9.49-4.png">
• E. <img src="/_files/images/civil-engineering/waste-water-engineering/182-9.49-5.png">