In the figure, there is a conducting wire having current i and which has a shape of half ellipse $\left[\frac{x^2}{a^2} + \frac{y^2}{b^2} = 1\right]$ is kept in a uniform magnetic field B as shown. If the mass of wire is m, the acceleration of wire will be


$$\begin{gathered} 1. ○ \frac{2ibB}{m} \\ 2. ○ \frac{2iaB}{m} \\ 3. ○ \frac{ibB}{m} \\ 4. ○ \frac{iaB}{m} \end{gathered}$$

please answer it correctly ?