Find the missing fraction in the box. \[\mathbf{1}\frac{\mathbf{3}}{\mathbf{4}}+\mathbf{2}\frac{\mathbf{3}}{\mathbf{8}}=[\,\,?\,\,]+\mathbf{2}\]

• A.  2                    
• B.    \[4\frac{1}{8}\]                     
• C.  \[2\frac{1}{8}\]                     
• D.    \[2\frac{1}{4}\]