\[_{86}{{A}^{222}}{{\to }_{84}}{{B}^{210}}\]. In this reaction how many \[\alpha \] and \[\beta \] particles are emitted [BHU 2005]

• A.            \[6\alpha ,\,3\beta \]       
• B.            \[3\alpha ,\,4\beta \]
• C.            \[4\alpha ,\,3\beta \]       
• D.            \[3\alpha ,\,6\beta \]