Working from Deep Geologic Strata Toward Shallow Geologic Strata, What

Working from deep geologic strata toward shallow geologic strata, what is the sequence in which fossils of these groups should make their first appearance?
1) charophytes
2) single-celled green algae
3) hornworts
4) plants with a dominant sporophyte

A) 1 → 3 → 2 → 4
B) 3 → 1 → 2 → 4
C) 2 → 1 → 3 → 4
D) 3 → 2 → 4 → 1
E) 2 → 4 → 1 → 3