It all started when Facebook chief executive Mark Zuckerberg changed his profile picture with a tint of green, saffron and white for the Tricolour in a symbolic gesture to suggest he supports Prime Minister Narendra Modi's "Digital India" campaign.
Take context from the input text and decide on the accurate relationship between 'Facebook' and 'Mark Zuckerberg' from the options provided.
Options: founded by, business division, industry, employer