Moore and Egeth (1997) Asked Participants to Rate Which of Two

Moore and Egeth (1997) asked participants to rate which of two lines was longer. Background dots were presented with the lines. On some trials, the dot pattern was a visual illusion, designed to manipulate the perceived length of the lines. Moore and Egeth found that

A) one can be influenced by events of which one is not conscious.
B) one cannot have perception without consciousness.
C) attention and perception are necessary for consciousness.
D) attention requires perception.