Which of the Following Is a Precipitation Reaction?
A) $\rightarrow$

Which of the following is a precipitation reaction?

A) Cas) + 2HClaq) $\rightarrow$ CaCl₂aq) + H₂g)
B) H₂SO₄aq) + 2NaOHaq) $\rightarrow$ Na₂SO₄aq) + 2H₂Ol)
C) 2NaOHaq) + MgCl₂aq) $\rightarrow$ 2 NaClaq) + MgOH) ₂s)