What Have We Learned About Backward Blocking Through the Extension

Multiple Choice

What have we learned about backward blocking through the extension of theories derived from animal learning?

A) Backward blocking is only demonstrated when subjects extract a rule instead of learning a simple association.
B) Humans demonstrate backward blocking effects, but some non-human animals show backward blocking only when the stimuli are biologically significant.
C) Existing animal conditioning models cannot explain backward blocking effects.
D) Backward blocking can occur when people learn about remembered events.