Indicate the maximum water/cement ratio allowed for concrete exposed to special exposure conditions. The water/cement ratio for concrete exposed t...

Indicate the maximum water/cement ratio allowed for concrete exposed to special exposure conditions.

The water/cement ratio for concrete exposed to fresh water is 0.50.
The water/cement ratio for concrete exposed to seawater or brackish water is 0.45.
The water/cement ratio for concrete exposed to sewage water is 0.45.
The water/cement ratio for concrete exposed to freezing and thawing processes in wet conditions is 0.45 for sills, gutters, and thin sections and 0.50 for other elements.
The water/cement ratio for concrete exposed to seawater, brackish water, mist, or dew of this water for corrosion protection is 0.40, which increases to 0.45 if the minimum coverage is increased by 15 mm.
The percentage of fine aggregate in relation to the total volume of aggregates is determined by the fineness modulus of the fine aggregate, the nominal maximum size of the coarse aggregate, its profile, and the cement content in the cubic unit of concrete.
a) I, II, III, IV, V and VI.
b) I, II, III and IV.
c) II, III, IV and V.
d) I, III, IV and V.