Simon Commission was boycotted by the nationalist leaders of India because

Consider the following statements:

$1$. Gandhi's Salt Satyagraha in $1930$ was against the state monopoly of the manufacture and sale of salt.

$2$. The American news magazine 'Time' covered the progress of Gandhiji's walk to Dandi on the Salt Satyagraha.

$3$. The Viceroy of India at the time of the Salt Satyagraha was Lord Ripon.

$4$. Gandhiji did not complete the Dandi march due to ill health.

Which of the statement(s) given above is/are correct?

Consider the following statements:

$1$. Gandhiji launched the Rowlatt Satyagraha in $1919$ because of the British measures to impose censorship on the press.

$2$. Gandhiji launched the Rowlatt Satyagraha because of the British policy of permitted detention without trial.

$3$. The Rowlatt Act was restricted to the Bombay and Madras Presidency.

$4$. The agitation against the Rowlatt Act reached the climax with the Jallianwala Bagh Massacre in Amritsar.

Which of the statements given above are correct?