A trade magazine routinely checks the​ drive-through service times of​ fast-food restaurants. A 90​% confidence interval

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A trade magazine routinely checks the​ drive-through
service times of​ fast-food restaurants.
A
90​%
confidence interval that results from examining
769
customers in one​ fast-food chain's​ drive-through has
a lower bound of
167.5
seconds and an upper bound of
170.9
seconds. What does this​ mean?
Choose the correct answer below.
A.One can be
90​%
confident that the mean​ drive-through service time of
this​ fast-food chain is between
167.5
seconds and
170.9
seconds.
B.One can be
90​%
confident that the mean​ drive-through service time of
this​ fast-food chain is
169.2
seconds.
C.There is
a
90​%
probability that the mean​ drive-through service time of
this​ fast-food chain is between
167.5
seconds and
170.9
seconds.
D.The mean​ drive-through service time of
this​ fast-food chain is
169.2
seconds
90​%
of the time.