The Enzymes α-Amylase and β-Amylase Can Cleave the ____ Bonds

The enzymes α-amylase and β-amylase can cleave the ____ bonds of amylopectin but not the ____ bonds.

A) α (1→6) -; α (1→4) -
B) β (1→6) -; β (1→4) -
C) α (1→4) -; β (1→4) -
D) α (1→4) -; α (1→6) -
E) α (1→6) -; β (1→4) -