Which Feature Characterizes Cells of the Inner Cell Mass in a Mammalian

Multiple Choice

Which feature characterizes cells of the inner cell mass in a mammalian embryo?

A) Secrete fluid to form the blastocoel
B) Adhere to the endometrium
C) Eventually form the hypoblast and epiblast
D) Secrete enzymes to aid in implantation
E) Become distinct from the trophoblast at the eight-cell stage