The answer they are looking for is the last one. However the last two are technically correct but the third one would result in negative work.
The more twist per foot in a pair of wires, the more resistant the pair will be to cross talk. A cross talk in network planning and design is a disturbance produced by electromagnetic interference beside a circuit or a cable pair. A telecommunication signal interrupts a signal in an adjacent circuit and can source the signals to turn out to be confused and cross over each other.
B
I hope this helps and have a wonderful day filled with joy!!
<3
