List the Set in Roster Form $$S = \{ x \mid x \text { is a natural number less than } 5 \}$$

List the set in roster form.
- $$S = \{ x \mid x \text { is a natural number less than } 5 \}$$

A) {1, 2, 3, 4, 5}
B) {0, 1, 2, 3, 4, 5}
C) {1, 2, 3, 4}
D) {0, 1, 2, 3, 4}