Which of the Following Observations Would Suggest That Aplysia Does

Which of the following observations would suggest that Aplysia does NOT undergo sensitization to a touch stimulus to its siphon?

A) Aplysia withdraws its siphon more rapidly after an initial stimulus.
B) Aplysia withdraws its siphon at the same rate regardless of exposure to an initial stimulus.
C) Aplysia withdraws its siphon in response to local conspecifics withdrawing their siphon.
D) Aplysia stops withdrawing its siphon with repeated stimulus, touching, of the siphon.