Given: 12Mg(HCO₃)₂ = 73, CaCl₂ = 111, Ca(HCO₃)₂ = 81, MgSO₄ = 40, NaCl = 10, and MgCl₂ = 95. Calculate the temporary and permanent hardness and total hardness.
a) Temporary hardness: 23, Permanent hardness: 51, Total hardness: 74
b) Temporary hardness: 28, Permanent hardness: 53, Total hardness: 81
c) Temporary hardness: 33, Permanent hardness: 48, Total hardness: 81
d) Temporary hardness: 40, Permanent hardness: 35, Total hardness: 75