Although GPS Is an Accurate Tool,which of the Following Are

Multiple Choice

Although GPS is an accurate tool,which of the following are sources of error for it?

A) The atmosphere can affect the signal speed of the GPS signal, leading to errors in the distance calculation.
B) Signals from multiple GPS satellites can interfere with each other, causing the receiver to miscalculate the time for a signal to reach it.
C) Individual satellite altitudes vary with time, but the receiver uses predetermined altitudes in its calculations.
D) Buildings and trees can cause the GPS signal to be deflected so that two slightly different signals will reach the receiver at the same time.