If 50 m point of a 100 m tape is 50 cm off line, and 50 m sections are straight, an error is generated equal to

• A. <img src="/_files/images/civil-engineering/surveying/76-3.350-1.png">
• B. <img src="/_files/images/civil-engineering/surveying/76-3.350-2.png">
• C. <img src="/_files/images/civil-engineering/surveying/76-3.350-3.png">
• D. <img src="/_files/images/civil-engineering/surveying/76-3.350-4.png">
• E. .