The slip in FCC crystal occurs in the (111) plane in {110} direction, but generally it is not energetically favourable, so it slips into two partial dislocations. The correct partial dislocation is represented by which of the following equation?

• A. ao/2[1 1 0] → ao/3[-1 2 1]+ao/2[112]
• B. ao/2[1 1 0] → ao/6[-1 2 1]+ao/6[112]
• C. ao/2[1 1 0] → ao/6[2 -1 -1]+ao/2[11-2]
• D. ao[1 1 0] → ao/3[-1 2 1]+ao/2[112]