During blasting operation in underground workings which have approached within 9m of each other the Shotfirer shall not fire in any of the faces unless some conditions are complied with. Which of the following is not to be observed as per CMR 2017?

A. all persons from both the faces are to be withdrawn

B. persons shall be withdrawn only from the face where blasting is going to be held

C. the place has to be fenced off to prevent inadvertent entering of persons

D. all persons shall take proper shelter as stated in the statutes

Answer: Option B