Task: Question Answering
Input (English): Question: In her backyard, Florry grows only yellow roses and white roses. Some of the rose bushes have flowers of both colors, and some have flowers of one color only. The number of rose bushes that have only yellow roses is 50% greater than the number of rose bushes that have only white roses. If there are yellow roses on 80% of Florry's rose bushes, then what percent W of her bushes have only yellow roses?

 Option A: 20

 Option B: 30

 Option C: 50

 Option D: 70

 Option E: 80
Output (English): Option B