Each of the following is true of enamel lamellae EXCEPT one.Which one is the EXCEPTION?

A) Lamellae are cracks in enamel that rarely extend through enamel.
B) Enamel lamellae may provide a pathway for bacteria into enamel.
C) The most common type of lamellae is caused by trauma.
D) Rapid changes in temperature from food and drink commonly cause lamellae.
E) An infrequent type of lamellae is a developmental defect.