Select the best answer to complete each statement, and place the letter of your answer in the space provided.
The maximum distance from a box that nonmetallic-sheathed cable shall be stapled will not exceed
a. $1 / 2 \mathrm{ft}$.
d. five times the diameter.
b. $1 \mathrm{ft}$.
e. $4-1 / 2 \mathrm{ft}$.
c. $2 \mathrm{ft}$.