What is the theme of this newspaper editorial? Select the most appropriate combination of factors given below.a. Overcrowding of Mount Everest on 22nd May, 2019.b. The urgent necessity to introduce and implement adequate safety measures to prevent man-made disasters.c. Not to treat the ascent of the highest peak as an adventure sport.d. Refuse permits to amateur climbers.e. Disallow tour operating companies from crowding the base-camp.

• A. b & c
• B. c & d
• C. a & b
• D. a & e