Read these lines from Fredrick Douglass's speech "What to The Slave Is the Fourth of July?"

If I do forget, if I do not faithfully remember those bleeding children of sorrow this day, "may my right hand forget her cunning, and may my tongue cleave to the roof of my mouth!"

Which definition of cleave is most likely suited for this line?

A) Be faithful to
B) Pierce or penetrate
C) Split or separate
D) Stick fast; cling