A common inactive ingredient in products such as sunscreen lotions and shampoo is triethyl amine,also known as TEA.Which of the following is the chemical structure for this compound? 
(a) (b) (c) (d)
Definitions:
Interquartile Range
A measure of variability, calculated by subtracting the first quartile from the third quartile of a data set.
Mean
The average value of a set of numbers, calculated by dividing the sum of all the numbers by the count of numbers.
Range
Range is the difference between the highest and lowest values in a set of data, providing a measure of the spread or dispersion of the values.
Median
The middle value in a data set when the numbers are arranged in ascending order.
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