2i^−2k^2 \hat{i}-2 \hat{k}2i^−2k^
000
2i^−2j^−2k^2 \hat{i}-2 \hat{j}-2 \hat{k}2i^−2j^−2k^
2i^+2k^2 \hat{\mathrm{i}}+2 \hat{\mathrm{k}}2i^+2k^
None of them
