A sailing vessel of less than 20 meters is exhibiting the optional combined lantern at the masthead permitted by Rule 25(b). She wishes to also exhibit the optional red-over-green all-round lights at the masthead permitted by Rule 25(c). Which statement is correct?

1. A. She may exhibit both simultaneously provided the combined lantern is extinguished when the all-round lights are in use
2. B. She may exhibit both simultaneously at all times
3. ✓ The red-over-green all-round lights shall not be exhibited in conjunction with the combined lanternCorrect
4. D. She may exhibit both only in restricted visibility