The Sydney Mardi Gras parade began in 1978 as a march and commemoration of the 1969 Stonewall Riots of New York. It is an annual event promoting awareness of gay, lesbian, bisexual and transgender issues and themes Photograph: Lisa Maree Williams/Getty Images

Based on that paragraph can we conclude that this sentence is true?
The Sydney Mardi Gras parade was viewed by mark

Possible answers:
[a]. Yes
[b]. It's impossible to say
[c]. No
[b].