For which of the following reasons has the Prayagraj Kumbh Mela 2019 secured a place in the Guinness Book of World Records?1.Largest crowd management2.Largest sanitation drive3.Largest painting exercise of public sites.

• A. Only 1
• B. Only 1 and 2
• C. Only 1 and 3
• D. Only 2 and 3
• E. All of the above