The Tongue Begins to Develop in the Embryo, Shortly After $4 {~~1 / 2}$

The tongue begins to develop in the embryo, shortly after the buccopharyngeal membrane ruptures. This event occurs at about $4 {~~1 / 2}$ weeks.

A) Both statements are true.
B) The first statement is true; the second is false.
C) The first statement is false; the second is true.
D) Both statements are false.