Answer the following questions based on the given case.
Three students, A, B and C, are preparing sugar solutions for an experiment:
Student A dissolves 23 \(g\) of sugar and makes the solution up to \(100\ mL\) of water.
Student B dissolves 64 \(g\) of sugar and makes the solution up to \(200\ mL\) of water.
Student C dissolves 42 \(g\) of sugar and makes the solution up to \(100\ mL\) of water.
Student A dissolves 23 \(g\) of sugar and makes the solution up to \(100\ mL\) of water.
Student B dissolves 64 \(g\) of sugar and makes the solution up to \(200\ mL\) of water.
Student C dissolves 42 \(g\) of sugar and makes the solution up to \(100\ mL\) of water.
Calculate the mass by volume percentage (\(%\) \(m/v\)) concentration of sugar in each students's solution. Whose solution is the most concentrated? Explain why?
i. Mass by volume percentage of sugar in student A's solution is \(\%\)
ii. Mass by volume percentage of sugar in student B's solution is \(\%\)
iii. Mass by volume percentage of sugar in student C's solution is \(\%\)
[Note: Enter your answer in whole number]
iv. The most concentrated solution is