Each of the Following Statement Correctly Compares Gamma Ray Bursts

Each of the following statement correctly compares gamma ray bursts with X-ray bursts EXCEPT ONE.Which is the exception?

A) Gamma ray bursts occur only once. X-ray bursts can repeat.
B) Gamma ray bursts originate all over the sky. X-ray bursts come mostly from the galactic plane.
C) In general, gamma ray bursts carry less energy than X-ray bursts.
D) Gamma ray bursts appear to originate at the beginning of a supernova explosion. X-ray bursts original in binary systems.