The passage suggests which about service provided?

• ক It enabled the bank to retain customers at an acceptable rate. ✅ সঠিক উত্তর
• খ It had already been improved after having caused damage to the bank's reputation in the past.
• গ It threatened o weaken the bank's competitive position with respect to other regional banks.
• ঘ It is slightly superior to that of the bank's regional competitors.