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An opinion poll asked a random sample of adults whether they believe flu shots are ineffective in the United States. A commentator believes less than 35% of all adults believe they are ineffective.
Which null and alternative hypotheses should be used to test this claim?
A) H0: p ≠ 0.35, Ha: p < 0.35
B) H0: p = 0.35, Ha: p < 0.35
C) H0: p = 0.35, Ha: p ≠ 0.35
D) H0: p < 0.35, Ha: p = 0.35
E) H0: p = 0.35, Ha: p > 0.35

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