What is the gram fomula mass of calcium carbonate (CaSO4)?

A. 6 g
B. 136.2 g
C. 230.0 g
D. 235.4 g
think B

You say calcium carbonate and write calcium sulfate.

The formula mass of CaSO4 is 136.1 on my table; for CaCO3 it is 100. I agree with B for CaSO4.