im srry but huh wut do u mean
1922 sao paulo modern art week festival ommitted ?
They are quite common in most forms of art seems to be the best answer for your question :)
A because most people would know the artist who made it if they have seen it because people give credit and people don’t really look extremely concentrated when there looking at it, it’s whether they like it or if they don’t like it they can also say b that’s also a good answer but a is for me