Which one of the following residual biases involves the GPS accuracy ?

[A].	Satellite dependent baises due to uncertainty in the orbital parameters of the satellite.
[B].	Receiver-depandent biases due to clock stability with line
[C].	Signal propagation baises due to the sphere and troposphere propogation.
[D].	All the above

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.