Directions: In the questions, a part of the sentence is given in Underline. Below are given alternatives to the Underline part at (A), (B) and (C) which may improve the sentence. Choose the correct alternative. In case no improvement is needed your answer is (D).

प्र:

This telephone number is not existing. 

• 1
  has not been existing
• 2
  does not exist
• 3
  has not existed
• 4
  No improvement