If $a, b, c, d, e, f$ are in AP , then $(e-c)$ is equal to which one of the following?

• A

  $2(c-a)$
• Correct answer
  B

  $2(d-c)$
• C

  $2(f-d)$
• D

  $(d-c)$

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