Find the mode for the following group of data items. If there is no mode, so state.
\[
4.8,7.8 .2,5.9,7.4,7.4,6.4,7.9,6.8,5.7,5.7 \text { 막 }
\]
Select the correct choice below and, if necessary, fill in the answer box within your choice.
A. The mode(s) is/are \( \square \) . (Use a comma to separate answers as needed.)
B. There is no mode.