What is correct in this situation?

Here, the traffic light is red for the direction going straight and left, but the right turn arrow is green. According to German traffic rules, when a green arrow signal is shown separately for right turns, drivers turning right are allowed to proceed even when the main light is red.

This means traffic turning right may proceed, while traffic continuing straight or turning left must wait for a green light.

This rule allows a smoother flow of traffic turning right without having to wait for all other directions, as long as the green arrow is displayed. So your answer is correct because only traffic turning right has permission to move forward in this scenario.