Appliance America's Customer Complaints Have Increased Because Its Drivers Often

Appliance America's customer complaints have increased because its drivers often get lost when attempting deliveries,which means that the deliveries arrived late.The drivers have resisted using GPS systems,claiming they know their territories.But managers are now encouraging them to look for the best solution to the increased level of customer complaints.Appliance America is in the ________ stage of Lewin's change model.

A) changing
B) unfreezing
C) evaluation
D) learning
E) refreezing