The acceleration of the blocks A and B in the situations shown in the figure

$\frac{2}{7}\text{g\hspace{0.17em}downwards,\hspace{0.17em}}\frac{\text{g}}{\text{7}}\text{\hspace{0.17em}upwards}$

$\frac{\text{g}}{\text{7}}\text{\hspace{0.17em}downwards,\hspace{0.17em}\hspace{0.17em}}\frac{2}{7}\text{g\hspace{0.17em}upwards}$

$\frac{3}{7}\text{g\hspace{0.17em}downwards,\hspace{0.17em}}\frac{2}{7}\text{g\hspace{0.17em}upwards}$

$\frac{2\text{g}}{7}\text{\hspace{0.17em}downwards,\hspace{0.17em}}\frac{2g}{7}\text{\hspace{0.17em}upwards}$