In a room where the temperature is \[{{30}^{o}}C\], a body cools from \[{{61}^{o}}C\] to \[{{59}^{o}}C\] in 4 minutes. The time (in min.) taken by the body to cool from \[{{51}^{0}}C\]to \[{{49}^{0}}C\] will be [UPSEAT 2000]

• A.            4 min                                       
• B.            6 min
• C.            5 min                                       
• D.            8 min