Which of the following reactions is the metal displacement reaction ? Choose the right option.
(A) \( 2KClO_3 \ce{->[\Delta]} 2KCl + 3O_2 \)

(B) \( Cr_2O_3 + 2Al \ce{->[\Delta]} Al_2O_3 + 2Cr \)
(C) \( Fe + 2HCl \to FeCl_2 + H_2 \uparrow \)
(D) \( 2Pb(NO_3)_2 \to 2PbO + 4NO_2 + O_2 \uparrow \)