How does this affect the MSTP topology?

Refer to the exhibit.

Originally, all four switches had the same region configuration. VLAN 14 was added to Switch_D and then mapped to instance 2.

How does this affect the MSTP topology?
A . Load sharing is lost, one of the uplinks is blocked for all traffic on Switch_C and Switch_
C . Load sharing is lost, one of the uplinks is blocked for all traffic on Switch_D
D . All connectivity is lost, both uplinks are blocked on Switch_
F . A Layer 2 loop exists and will cause sporadic connectivity issues.

Answer: B