Question: What is a key business motivation for ensuring high service retainability in wireless networks, from an operator's perspective?
Option 1: To minimize infrastructure costs associated with frequent handovers.
Option 2: To prevent loss of income due to potential subscriber churn caused by frequent service interruptions.
Option 3: To optimize network resource allocation for new subscribers.
Option 4: To reduce the complexity of billing processes.
Explanation: Ensuring high service retainability is crucial for operators to prevent financial losses. Frequent service interruptions can lead to subscriber dissatisfaction, potentially causing them to switch providers (churn), resulting in lost revenue for the operator.