Biology students used raw eggs in an experiment on tonicity and osmosis. the students put their eggs into vinegar to remove the shells. the vinegar was used to remove the shell form the raw egg. what other effect(s) did the vinegar have on the egg? a: the vinegar solution was hypotonic , causing the egg to gain mass b: the vinegar solution was hypotonic , causing the egg to lose mass c: the vinegar solution was hypertonic , causing the egg to gain mass d: the vinegar solution was isotonic to the egg so the mass remained constant