A unit dislocation splits into two partial dislocations. The correct combination of the Burgers vectors of the partial dislocations for a given unit dislocation having Burgers vector $$\frac{a}{2}\left[ {1\overline 1 0} \right]$$

A. $$\frac{a}{6}\left[ {2\overline 1 1} \right]{\text{and}}\frac{a}{6}\left[ {1\overline 2 \overline 1 } \right]$$

B. $$\frac{a}{6}\left[ {1\overline 1 2} \right]{\text{and}}\frac{a}{6}\left[ {1\overline 2 \overline 1 } \right]$$

C. $$\frac{a}{6}\left[ {11\overline 2 } \right]{\text{and}}\frac{a}{6}\left[ {2\overline 1 \overline 1 } \right]$$

D. $$\frac{a}{6}\left[ {211} \right]{\text{and}}\frac{a}{6}\left[ {12\overline 1 } \right]$$

Answer: Option A