Identify the correct statements regarding the “Salt-March”:
A. On 12 March 1930, Gandhiji began walking from his ashram at Sabarmati towards the ocean.
B. Lord Irwin was the Viceroy of India during the famous “Salt March” of 1930.
C. The progress of “Salt March” can be traced from an important source: the London newsmagazine, London News.
D. The progress of Gandhiji's march can also be traced from the secret-reports filed by the police officials.
Choose the correct answer from the options given below: