Which period below depicts internal emergency in India under article 352?

• A. 6th June, 1974 to 23rd March, 1976
• B. 5th June, 1975 to 21st March, 1977
• C. 0th June, 1975 to 20th March, 1977
• D. 1st June, 1976 to 21st March, 1974