Identify the acid and base in the equation below:

Mg(OH)2+2HCI > MgCI2+2H2O

Mg(OH)2 is the acid and HCl is the base
Mg(OH)2 is the base and HCl is the acid
MgCl2 is the acid and H2O is the base
MgCl2 is the base and H2O is the acid