The Answer is B
Why? ↓
A : It must be soft and flat, While Glass bottle are hard and sharp if broken.
B : A Glass bottle is good when recycling it to a Basket since it is a bottle it has a hollow hole inside which makes it more like a basket. ( Recommended ).
C : Same as Floor mat, Glass bottle cannot be flat if it is a bottle already.
"Glass is hard, and it cannot bend"
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