Read the following passage:
'The giant panda, a native of China, is known for its distinctive black and white coat. Primarily a herbivore, the panda's diet is 99% bamboo. To meet its nutritional needs, a panda must consume 26 to 84 pounds of bamboo every day. This is due to the low nutrient content of bamboo. To conserve energy, pandas generally limit their social interaction and avoid steep terrain.'
What is the main idea of this passage?
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A
Pandas have unique black and white fur.
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B
The giant panda's diet and behavior are shaped by its primary food source, bamboo.
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C
Pandas are solitary animals that live in China.
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D
Bamboo is not a very nutritious food for most animals.