What is the highest binary number that can be referred to on a three position jumper block?

Q. What is the highest binary number that can be referred to on a three position jumper block?
A. 4
B. 6
C. F
D. 1
E. None of the above Answer: 1

A. 4
B. 6
C. F
D. 1
E. None of the above Answer: 1