Which of the following reactions would have the greatest reaction rate at room temperature?

A$.C_3{H}_{8(g)}+5O_{2(g)}3C{O}_{2(g)}+4H_2{O}_{(g)}$

B$.C{a}_{(s)}+2H_2{O}_{(l)}Ca(OH{)}_{2(aq)}+H_{2(g)}$

C$.AgN{O}_{3(aq)}+NaC{l}_{(aq)}AgC{l}_{(s)}+NaN{O}_{3(aq)}$

D$.N{a}_{2}C{O}_{3(s)}+2HC{l}_{(aq)}2NaC{l}_{(aq)}+H_2{O}_{(l)}+C{O}_{2(g)}$