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Extracted text: During the dumpy level test, the observations are as follows: Staff reading station Instrument placed A B A 1.605 2.235 B 2.564 3.545 Distance between A and B is 250 m and R.L of A is 435.062 m, Find the R.L of B. a) 436.25 b) 435.05 c) 434.25 d) 435.86