If \(\left[\matrix{3&2\\1&4}\right]\) = \(\left[\matrix{\alpha &\beta \\\gamma & { \theta }^{ 2 } }\right]\), then what is the value of \(\theta \) ?

2 -2 Both 2 and -2 Neither 2 nor -2

Both 2 and -2

On Comparing two matrices \( { \theta }^{ 2 } = 4\) $\Rightarrow \theta = 2 or -2$