Which is not one of the three major questions required in order to investigate how the learning of L2 is shaped by instructional context and activities（）？

A.What opportunities for developing L2 pragmatic ability are offered in language classrooms.

B.Whether pragmatic ability develops in a classroom setting without instruction in pragmatics.

C.What effects various approaches to instruction have on pragmatic development.

D.How to develop grammatical competence in L2 classroom setting.