Use the information in the case to answer the following questions.
Three students, A, B and C, are preparing sugar solutions for an experiment:
Student A dissolves 20 \(g\) of sugar in \(80\ g\) of water.
Student B dissolves 23 \(g\) of sugar in \(100\ g\) of water.
Student C dissolves 33 \(g\) of sugar in \(80\ g\) of water.
Student A dissolves 20 \(g\) of sugar in \(80\ g\) of water.
Student B dissolves 23 \(g\) of sugar in \(100\ g\) of water.
Student C dissolves 33 \(g\) of sugar in \(80\ g\) of water.
i. Mass percentage of sugar in student A's solution is \(\%\)
ii. Mass percentage of sugar in student B's solution is \(\%\)
iii. Mass percentage of sugar in student C's solution is \(\%\)
[Note: Enter your answer in whole number]
iv. The most concentrated solution is