Calculate Δ S° for the Following Reaction: ​

Calculate Δ S° for the following reaction: ​
SO₃( g ) + CaO( s ) → CaSO₄( s ) .
​
Δ S° in J\moles K for CaO( s ) is 40, for SO ₃ ( g ) is 256.6, and for CaSO ₄ ( s ) is 107.

A) +404 J\K
B) − 190 J\K
C) − 323 J\K
D) +189 J\K