Which of the following is true about simultaneous events?
a. Whether two events are simultaneous depends on the reference system the events are viewed from.
b. Two events at different places cannot ever be simultaneous.
c. Two events can only be simultaneous if they happen at the same place.
d. Two events can only be simultaneous if they are very carefully timed.
e. Only one event can be simultaneous at a time.
a
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