Which of the Following Is Descriptive of Hebb's Perspective

Which of the following is descriptive of Hebb's perspective?

A) His work was anchored in previously established and widely accepted neuropsychological research.
B) He claimed that repeated firing of neurons facilitates ease of transmission among neurons accounting for learning.
C) He believed that phase sequences correspond to simple sensory input.
D) His approach was a challenge to the validity of Arousal Theory.