Who was the first person to call Mahatma Gandhi, ‘Father of Nation’?

Who of the following called Gandhiji ‘’Mahatma’’ for the first time?

In India, the first major public appearance of Mahatma Gandhi was in

The prefix ‘Mahatma’ was added with the name of Gandhi:

Who was the secretary of Mahatma Gandhi during Noakhali?

Bose called Gandhi “The Father of Our Nation” in a radio broadcast from ________ in 1944?