The dot plots below show the scores for a group of students for two rounds of a quiz:

two dot plots are shown one below the other. the title for the dot plot on the top is round 1 and the title for the bottom plot is round 2. below the line for each dot plot is written score. there are markings from 1 to 5 on the line at intervals of one. there are there are 4 dots above the mark 4 and there are 4 dots above the mark 5. for the bottom dot plot there are 2 dots above the mark 1. there are 2 dots above the mark 2, there is 1 dot above the mark 3, there are 2 dots above the mark 4 and there is 1 dot above the mark 5.

which of the following inferences can be made using the dot plots?

the range of round 2 is greater than the round 1 range.
round 2 scores are higher than round 1 scores.
round 1 scores are lower than round 2 scores.
there is no overlap between the data.