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Consider the following statements for air-entrained concrete:

  1. Air-entrainment reduces the water demand for a given level of workability
  2. Use of air-entrained  concrete is required in environments where cyclic freezing and thawing is expected

Which of the following is TRUE?

  1. Both (i) and (ii) are True
  2. Both (i) and (ii) are False
  3. (i) is True and (ii) is False
  4. (i) is False and (ii) is True
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