In a room at temperature $20^{\circ} \mathrm{C}$, a cup of coffee cools from $80^{\circ}$ C to $75^{\circ} \mathrm{C}$ in 2 minutes. The time, in minutes, taken by the coffee to cool from $40^{\circ} \mathrm{C}$ to $35^{\circ} \mathrm{C}$ is closest to

• A

  $2$
• Correct answer
  B

  $6$
• C

  $4$
• D

  $8$

Hence, the correct answer is option: 'B'.