The mean deviation about the mean for the following data is

Class Interval	$0$–$2$	$2$–$4$	$4$–$6$	$6$–$8$	$8$–$10$
Frequency	$1$	$3$	$4$	$1$	$2$

• A

  $3$
• Correct answer
  B

  $\frac{20}{11}$
• C

  $\frac{40}{11}$
• D

  $2$

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