For matrix A = \(\left[ {\begin{array}{*{20}{c}} 2&5\\ { - 11}&7 \end{array}} \right]\), (adj A)' is equal to :
1
\(\left[ {\begin{array}{*{20}{c}} { - 2}&{ - 5}\\ {11}&{ - 7} \end{array}} \right]\)
2
\(\left[ {\begin{array}{*{20}{c}} 7&5\\ {11}&2 \end{array}} \right]\)
3
\(\left[ {\begin{array}{*{20}{c}} 7&{11}\\ { - 5}&2 \end{array}} \right]\)
4
\(\left[ {\begin{array}{*{20}{c}} 7&{ - 5}\\ {11}&2 \end{array}} \right]\)