The correct option is D Total number of blue and red wires: 16; Green wires
According to the given tally chart,
Number of blue wires =9
Number of green wires =12
Number of red wires =7
So, total number of blue and red wires =9+7=16
By observing the tally chart, we can say that green wires are the most in number.
Hence, Option C is correct.