Why are retractable pitot tubes used in stealth planes?

A)
Stealth configuration
B)
Aerodynamically efficient
C)
Use GPS for speed and altitude
D)
Error values in supersonic speeds

Correct Answer :   Stealth configuration


Explanation : Stealth planes, such as the B2 spirit stealth bomber, use retractable pitot tubes to maintain their stealth. When not in stealth mode they extend the probes for air data measurements.