A body cools in 7 min from \[60{}^\circ C\]to\[40{}^\circ C\]. What will be its temperature after the next 7 min? The temperature of surroundings is\[10{}^\circ C\].

• A. \[28{}^\circ C\]           
• B. \[25{}^\circ C\]
• C. \[30{}^\circ C\]
• D. \[22{}^\circ C\]