DGPS is based on the concept that bias errors in the position of locations in a given local area, are
same if their distances are within
(A) 25 km
(B) 50 km
(C) 75 km
(D) 100 km
same if their distances are within
(A) 25 km
(B) 50 km
(C) 75 km
(D) 100 km