A survey team wants to determine the difference in elevation of post A and point B using two-peg test. The distance of these two points from each other is 50 meters, where point C is 30 meters away from A and 20 meters away from B. If the instrument is set up at point C, considering the computed error, what should be the correct reading at point B? Reading at A Reading at B Instrument near A 3.1818 0.0525 Instrument near B 5.6892 2.4859 Instrument at C 3.7254 1.5486