Arrange the following samples into groups based on their effect on litmus paper:
Answer variants:
Vinegar
Salt solution
Cooking oil
Amla juice
Washing powder solution
Limewater
Instructions:
- Group A: Samples that turn blue litmus paper red.
- Group B: Samples that turn red litmus paper blue.
- Group C: Samples that do not affect either blue or red litmus paper.
| Group A | Group B | Group C |