A bucket full of hot water is kept in a room and it cools from `75^oC` to `70^oC` in `T_1` minutes, from `70^oC` to `65^oC` in `T_2` minutes and from `65^oC` in `T_3` minutes. Then
`T_1 < T_2 > T_3`
`T_1= T_2= T_3`
`T_1 < T_2< T_3`
`T_1> T_2 > T_3`
please tell me the reason