A rocket has an initial mass of \[20\times {{10}^{3}}\,kg\]. If it is to blast off with an initial acceleration of \[4\,m{{s}^{-2}}\], the initial thrust needed is \[(g\tilde{=}10\,m{{s}^{-2}})\] [Kurukshetra CEE 1996]

• A.                              \[6\times {{10}^{4}}\,N\]                
• B.                         \[28\times {{10}^{4}}\,N\]          
• C.                         \[20\times {{10}^{4}}\,N\]            
• D.                           \[12\times {{10}^{4}}\,N\]