Final answer:
True, DSL and voice can indeed be transmitted over the same copper pair because DSL uses a higher frequency band for data, avoiding interference with voice signals.
Step-by-step explanation:
The statement that we can transit both DSL and voice over a single copper pair is true. DSL, which stands for Digital Subscriber Line, is a technology designed to allow high-speed data transmission over the traditional copper telephone lines. By using a higher frequency band, DSL can transmit data while the lower frequency band is still able to carry regular telephone voice signals. This means that both internet data and voice calls can be handled simultaneously on the same line without interfering with each other.