A passage about renewable energy contains the following details. Which one is the STRONGEST supporting detail for the claim 'Solar energy is becoming more affordable'?
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A
The sun is a star located about 150 million kilometers from Earth.
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B
The cost of solar panels has dropped by 89% over the past decade.
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C
Some people find solar panels visually unappealing on rooftops.
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D
Solar energy was first harnessed commercially in the 1950s.