A uniform slope was measured by the method of stepping. If the difference in level between two points is 1.8 m and the slope distance between them is 15 m, the error is approximately equal to________.

A)
cumulative, + 0.11 m
B)
cumulative, - 0.11 m
C)
compensating, ± 0.11 m
D)
None of the above

Correct Answer :   cumulative, + 0.11 m