Sharon wants to know about how many pairs of sneakers 7th-grade students own. She couldn’t reasonably ask all 349 7th graders, so she asked 10 to get a random sample.

These were her results: 5, 3, 2, 4, 5, 1, 2, 4, 3, 3; mean = 3.2

From the data and by calculating the mean, which inferences could Sharon make?
A. All 7th-grade students own sneakers.
B. An average 7th-grade student owns around 3 pairs of sneakers.
C. An average 7th-grade student owns 4 or more pairs of sneakers.
D. Most 7th-grade students prefer sandals to sneakers.