The tail-stock set over required to turn a taper on the entire length of a workpiece having diameters D and d is
A
$$\frac{{{\text{D}} - {\text{d}}}}{{2{\text{L}}}}$$
B
$$\frac{{{\text{D}} - {\text{d}}}}{{\text{L}}}$$
C
$$\frac{{{\text{D}} - {\text{d}}}}{2}$$
D
$${\text{D}} - {\text{d}}$$
Correct Answer: $$\frac{{{\text{D}} - {\text{d}}}}{2}$$