What Is the Main Reason Many, If Not Most, Psychologists

What is the main reason many, if not most, psychologists doubt that extrasensory perception exists?

A) The failure to replicate experiments which seem to demonstrate the existence of extrasensory perception.
B) The fact that extrasensory perception is not taught in accredited graduate schools.
C) The inability to scientifically test claims of extrasensory perception.
D) Meta-analyses of research using the ganzfeld procedure demonstrated that positive ESP results were always due to methodological flaws.