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A medical researcher says that less than 72​% of adults in a certain country think that...

A medical researcher says that less than 72​% of adults in a certain country think that healthy children should be required to be vaccinated. In a random sample of 400 adults in that​ country, 69​% think that healthy children should be required to be vaccinated. At α=0.05​, is there enough evidence to support the​ researcher's claim? Select the correct choice below and fill in the answer box to complete your choice. ​(Type an integer or a decimal. Do not​ round.)

A. More than _% of adults in the country think that healthy children should be required to be vaccinated.

B. The percentage of adults in the country who think that healthy children should be required to be vaccinated is not _%.

C. Less than _% of adults in the country think that healthy children should be required to be vaccinated.

D. _% of adults in the country think that healthy children should be required to be vaccinated.

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