Find the Work Done by a Person Weighing 180 Pounds $1,260 \mathrm { ft } \cdot \mathrm { lb }$

Multiple Choice

Find the work done by a person weighing 180 pounds walking exactly one revolution up a circular helical staircase of radius 4 feet if the person rises 14 feet.

A) $1,260 \mathrm { ft } \cdot \mathrm { lb }$
B) $10,080 \mathrm { ft } \cdot \mathrm { lb }$
C) $2,520 \mathrm { ft } - \mathrm { lb }$
D) $5,040 \mathrm { ft } \cdot \mathrm { lb }$
E) $180 \mathrm { ft } \cdot \mathrm { lb }$