$\text { The area of the region enclosed by the curves } y^{2}=x \text { and } y=x^{2} \text { is- }$

$\frac{1}{12} \text { sq. unit }$

$\frac{1}{3} \text { sq. unit }$

$\frac{1}{2} \text { sq. unit }$

$\frac{1}{6} \text { sq.unit }$