Two events occur at different points in inertial frame A and are simultaneous. In another inertial frame B moving at a constant speed relative to A, what can be said about their time ordering?
Correct: B
According to Einstein's relativity, simultaneity is not absolute. If two events are spatially separated in one frame, they cannot be simultaneous in all frames. The order can reverse depending on the direction of motion relative to event positions. Hence, option B is correct. This tests understanding of relativity of simultaneity.