How Did Sperling's Study Establish That the Length of Iconic

Multiple Choice

How did Sperling's study establish that the length of iconic memory was about half a second?

A) He found that participants could report about half of a grid of 12 letters flashed for half a second.
B) He found that participants could report any stimulus in their visual field that was presented for at least half a second.
C) He found that participants could report stimuli in their dominant visual field for up to half a second.
D) He found that participants could report any stimulus flashed in their visual field if cued to do so within half a second.