I have chosen the poster C because i am not homophobic
At left of the picture we can see the colors of lesbian and gay flag, red for life, orange for health, yellow for sun, green for nature, bleu for harmony and purple for community spirit.
In the rest of the poster there is a text written in white on a black background.
The title it's "Discrimination Free Zone" because the people judge a gays couple or lesbian's couple without knowing really the personnality of the man or the woman and "Making a better place for everyone" it's because the people are reject.
The difference between the poster A and C it's the text, in the picture 1 there are lot of text writing small and the picture does not reflect the topic processed while in the picture C the topic is written big