These Events Occur During the Development of the Nervous System

Multiple Choice

These events occur during the development of the nervous system:
A: Neural groove forms
B: Neural folds approach one another
C: Neural crest cells pinch off from the neural folds
D: Neural folds fuse to form neural tube
Which is the correct chronological order for the events?

A) a,c,b,d
B) c,b,d,a
C) a,b,c,d
D) b a,d,c
E) c a,b,d