The school principal asks students to complete an online poll asking them about their interest in a summer reading program. Of the 48 responses, 32 students are somewhat interested or very interested in the program. The principal concludes that 2 out of 3 students in the school would be at least somewhat interested in the summer reading program. Which statements are true about the sampling method? Select all that apply.

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A)
This scenario is a systematic random sample.
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B)
The sampling method is biased.
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C)
The inference is valid.
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D)
This scenario is a voluntary response sample.
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E)
The sampling method is unbiased.
Please help quick i really do not get this