How Do α-Amylase and β-Amylase Differ in Their Functions

How do α-amylase and β-amylase differ in their functions?

A) They do not differ, they are two different enzymes which perform the same function.
B) α-amylase hydrolyzes α(1 → 6) glycosidic bonds, but β-amylase hydrolyzes β(1 → 4) glycosidic bonds.
C) α-amylase hydrolyzes α(1 → 6) glycosidic bonds at in an orderly way, but β-amylase hydrolyzes α(1 → 4) glycosidic bonds at random.
D) α-amylase hydrolyzes α(1 → 4) glycosidic bonds at random, but β-amylase hydrolyzes α(1 → 4) glycosidic bonds in an orderly way.