An airplane was moving 50 m/s to the north relative to the air at landing. The wind was blowing 5 m/s toward the south relative to the ground . What was the speed of the airplane relative to the ground at time of landing .

D. the index of refraction of the second medium is lower.

Following the american gauge wire standards ,the larger gauge number, the slimmer the wire and thus the smaller current carrying capacity it can have.then both statements would be incorrect, as they are saying the opposite of what it is actually is.(smaller gauge numbers have thicker wires and can carry more current)