A. Indian Railway Catering and Tourism Corporation
B. Indian Railway Catering and Tourism Company
C. Indian Railway Tourism Corporation
D. Indian Railway Central Tourism Corporation

Solution

A. Indian Railway Catering and Tourism Corporation

Explanation

IRCTC stands for Indian Railway Catering and Tourism Corporation. It is a subsidiary of Indian Railways and is responsible for handling the catering, tourism, and online ticketing operations of the Indian Railways. The IRCTC website allows users to book train tickets, check train schedules, and make inquiries related to train travel in India.