Single/multi-choice problem: Which of the following solutions is better for the following goal:
how to remove stains from ceramic tiles

Choose your answer from: (a). Mix equal parts distilled white vinegar and soda in a bottle and spray it generously onto tiled surfaces. Allow to sit for a few minutes before scrubbing with a brush or sponge. Extra tough stains may require the combined action of baking soda and vinegar.. (b). Mix equal parts distilled white vinegar and water in a bottle and spray it generously onto tiled surfaces. Allow to sit for a few minutes before scrubbing with a brush or sponge. Extra tough stains may require the combined action of baking soda and vinegar..
(b).