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A 31-year-old woman delivered quintuplets in Heze, Shangdong province. The chance that a woman would have five babies at the same time is one in 65 million. The heaviest baby weighed 1.135 kg, and the tiniest one died after birth due to premature delivery.

What did the tiniest baby die of?

A. suffocation

B. premature labor

C. infection

（中國日報網英語點津 Helen 編輯）