Which of these statements is NOT true regarding flashbulb memories?

Which of these statements is NOT true regarding flashbulb memories? (which is incorrect)

Select one:

a. The events around September 11 are a flashbulb memory shared by most Americans.

b. Flashbulb memories are extremely accurate.

c. Flashbulb memories form around highly emotional events.

d. Flashbulb memories are remembered in vivid detail.