If b denotes the face width and L denotes the cone distance for a bevel gear, then the bevel factor is written as
A
$$\frac{{\text{b}}}{{\text{L}}}$$
B
$$\frac{{\text{b}}}{{2{\text{L}}}}$$
C
$$1 - 2{\text{bL}}$$
D
$$1 - \frac{{\text{b}}}{{\text{L}}}$$
Correct Answer: $$1 - \frac{{\text{b}}}{{\text{L}}}$$