Trig.

A statistician is analyzing data to find a model. She has determined the following characteristics of the data. Which characteristics of the data defined the period?
-The initial value is 5
-all of the values are negative
-the difference between the maximum and minimum values is 10
-the data repeats every 4 minutes

Can someone help explain this? It was missed on my text today but my teacher would not explain I thought I got it right. I chose D

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  1. D is correct
    something is amiss
    Tell your teacher that it is her job to explain things!

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