Question:
Where was Alexander Grothendieck educated in Mar, 1949?

Context:
 Alexander Grothendieck attended University of Montpellier from Jan, 1945 to Jan, 1948. 
 Alexander Grothendieck attended Nancy-Université from Jan, 1949 to Jan, 1953. 
 Alexander Grothendieck attended École normale supérieure  (Paris) from Jan, 1948 to Jan, 1949.

Answer:
Nancy-Université