Why did the 1976 Tanshan earthquake in China deal a blow to the Chinese earthquake prediction program?
A) It occurred without foreshocks and was not predicted, unlike one the previous year.
B) A prediction was issued for a major earthquake, but the earthquake turned out to be minor.
C) No anomalous animal behavior was recorded prior to the earthquake.
D) The Chinese had never predicted an earthquake successfully, so the warnings were not heeded.
A
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