Which two VLSM subnets, when taken as a pair, overlap?

Which two VLSM subnets, when taken as a pair, overlap? (Choose two.)

A.
10.22.21.128/26

B.
10.22.22.128/26

C.
10.22.22.0/27

D.
10.22.20.0/23E. 10.22.16.0/22