B. 11.2
That's the answer..
1/2 is the answer.............................
The mode indicates the highest frequency of a st of value (the most repeated data point).
In {23, 43, 43, 46, 43, 28, 12, 28, 28} we notice that 2 values are being repeated with the same frequency , that is 43 (3 times) & 28 (3 times).
This set is then bimodal
144 is the answer to the question