In the Hydrolysis of Methyl Trifluoroacetate, Give Two Purposes of the Zinc

In the hydrolysis of methyl trifluoroacetate, give two purposes of the zinc catalyst.
A)increases the rate of the first step by providing a metal-bound hydroxide ion
B)increases the rate of the second step by decreasing the basicity of the leaving group
C)increases the rate of the second step by increasing the basicity of the leaving group
D)increases the rate of the first step by providing a metal-bound water molecule
E)increases the rate of the last step by replacing alkoxide with hydroxide