Which of these Indian Presidents did His Holiness Shankaracharya of Sringeri confer the title of 'Rashtra Samman'?

Which of these Indian Presidents did His Holiness Shankaracharya of Sringeri confer the title of 'Rashtra Samman'?
(A) Dr. Shankar Dayal Sharma
(B) Giani Zail Singh
(C) Dr. Zakir Hussain
(D) Dr. Rajendra Prasad

Answer: (A) Dr. Shankar Dayal Sharma