Sperry's Participants Were

Sperry's participants were:

A) 11 patients with epilepsy who had suffered accidental brain injury
B) 11 patients with epilepsy who had had their corpus callosum cut
C) 11 patients with epilepsy who had had a frontal lobotomy
D) 31 patients with epilepsy who had had their corpus callosums cut
E) 11 patients with epilepsy who agreed that Sperry could cut their corpus callosums