Until when must we comply with the maximum speed sign?

A)Until finding another end-of-prohibition sign.
B)Until finding a different maximum speed sign.
C)Until past the intersection.Correct
As the maximum speed sign is on the same post as the danger sign, the prohibition ends when the indicated danger ends. In this case, once we have passed the intersection we will no longer have that speed limit.
When we find danger warning signs together with maximum speed signs or recommended maximum speed signs, those speed signs cease to be in force once the danger has ended.
This only happens with these signs. We should not be confused when we find other signs on the same post, since they have been placed that way to make use of the post.
In the case of the signs in Image A, the prohibition on overtaking will end when we encounter the "End of overtaking prohibition" or "End of prohibitions" sign and not when the danger of narrowing ends.
When we find danger warning signs together with maximum speed signs or recommended maximum speed signs, those speed signs cease to be in force once the danger has ended.
This only happens with these signs. We should not be confused when we find other signs on the same post, since they have been placed that way to make use of the post.
In the case of the signs in Image A, the prohibition on overtaking will end when we encounter the "End of overtaking prohibition" or "End of prohibitions" sign and not when the danger of narrowing ends.