context: Other acids can be effective.
answer_0: Generally, a moderately strong, non-oxidizing mineral acid is preferred.
answer_1: Frequently, a moderately strong, non-oxidizing mineral acid is preferred.
answer_2: Hence, a moderately strong, non-oxidizing mineral acid is preferred.
answer_3: Apparently, a moderately strong, non-oxidizing mineral acid is preferred.
answer_4: Separately, a moderately strong, non-oxidizing mineral acid is preferred.
answer_5: Especially, a moderately strong, non-oxidizing mineral acid is preferred.
answer_6: Seriously, a moderately strong, non-oxidizing mineral acid is preferred.
answer_7: Ultimately, a moderately strong, non-oxidizing mineral acid is preferred.
answer_8: Maybe, a moderately strong, non-oxidizing mineral acid is preferred.
answer_9: This, a moderately strong, non-oxidizing mineral acid is preferred.