Number of tea bags need to make for every 2 liters of water = 15 tea bags.
For each liter of water there need = 15/2 = 7.5 tea bags.
Peggy need to make 12 liters of iced tea.
Therefore, total number of tea bags required for 12 liters of iced tea = 12 × 7.5
= 90 tea bags.
Peggy also took 90 tea bags to make a 12-liter batch of iced tea.
Therefore, correct option is C option.
C It is just right.