Which student wrote an expression equivalent to 6x + 4x to the third power? Choose all that apply.
A: Anne wrote (6 + x) + (4 + x to the third power).
B: Bart wrote 6x (1 + 2/3x to the second power).
C: Cassie wrote 3x + 3x + 2x to the third power + 2x to the third power.
D: David wrote x(6 + 4x to the second power).
E: Edgar wrote 10 + x to the fourth power