We need an assumption, which weakens the position of using baboo as a constructiong material. As all stated points about bamboo in the argument were positive.
Consider you have a piece of land on the seashore (expensive $/qm), which can be used to build a hotel on it. But bamboo is not a suitable construction material for multistory buildings. So if you use Bamboo you can build a building with 20 rooms instead of 120 rooms when using steel etc. --> It's a negative point for bamboo. Hence (B)
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Consider you have a piece of land on the seashore (expensive $/qm), which can be used to build a hotel on it. But bamboo is not a suitable construction material for multistory buildings. So if you use Bamboo you can build a building with 20 rooms instead of 120 rooms when using steel etc. --> It's a negative point for bamboo. Hence (B)
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