What is the net ionic equation of 2H+ + SO42- + Ca2+ + 21 → CaSO4 + 2H+ + 21?
O A. H+ + SO42- + Ca2+ + 21 → CaSO4+H+ +11
O B. SO42- + Ca2+ → CaSO4
C. 2H+ + SO42- + Ca2+ + CaSO4 + 2H+
D. H2SO4(aq) + Cal2(aq) → CaSO4(s) + 2Hl(aq)
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