A researcher measures the weight of 10 runners, and finds the following weights: 110 lbs, 115 lbs, 112 lbs, 115 lbs, 121 lbs, 130 lbs, 109 lbs, 128 lbs, 115 lbs, 125 lbs, 126 lbs, 124 lbs. What is the mode?

A. 125 lbs

B. 120 lbs

C. 21 lbs

D. 130 lbs

E. 115 lbs

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