The component of vector \[A=2\hat{i}+3\hat{j}\]along the vector \[\hat{i}+\hat{j}\]is [KCET 1997]

• A.            \[\frac{5}{\sqrt{2}}\]        
• B.            \[10\sqrt{2}\]
• C.            \[5\sqrt{2}\]                         
• D.            5