Concept:ITAT e-Dwar is an online portal for electronic filing related to the Income Tax Appellate Tribunal.Explanation:ITAT e-Dwar is an e-filing portal of the Income Tax Appellate Tribunal.It allows parties to file appeals, applications, and documents online.This system reduces paper use, saves costs, and helps in faster case disposal.It aims to bridge the digital divide and promote digital inclusion.Answer:The correct answer is: An e-filing portal of Income Tax Appellate Tribunal (Option B).