Using the drawing of mRNA below, choose the letter that BEST fits the description. 
The 3 UTR corresponds to region:
Definitions:
Interquartile Range
The statistical measure of middle fifty percent of a data set, calculated as the difference between the 75th and 25th percentiles.
Test Scores
Quantitative measurements that represent a person's level of achievement or proficiency in a given subject or skill.
Precipitation
Any form of water, liquid or solid, that falls from the atmosphere and reaches the ground.
Canadian Cities
Urban areas within the country of Canada, known for diverse cultures, climates, and landscapes.
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