In order for a gear to work in a piece of machinery, the radius of the gear, r, must be greater than 4 cm, but not exceed 4.1 cm. Which compound inequality represents the situation? r > 4 and r ≤ 4.1 r > 4 or r ≤ 4.1 r < 4 and r ≥ 4.1 r < 4 or r ≥ 4.1