For a positively charged particle moving in a x-y­ plane initially along the x-axis, there is a sudden change in its path due to the presence of electric and/or magnetic fields beyond P. The curved path is shown in the x-y plane and is found to be non-circular. Which one of the following combinations is possible [IIT-JEE (Screening) 2003]

• A.            \[\overrightarrow{E}=0;\,\overrightarrow{B}=b\hat{i}\,+c\hat{k}\]             
• B.            \[\overrightarrow{E}=ai;\,\overrightarrow{B}=c\hat{k}\,+a\hat{i}\]
• C.            \[\overrightarrow{E}=0;\,\overrightarrow{B}=c\hat{j}\,+b\hat{k}\]             
• D.            \[\overrightarrow{E}=ai;\,\overrightarrow{B}=c\hat{k}\,+b\hat{j}\]