Did Arjuna Understand Bhagawad Gita?

Did Arjuna Understand Bhagawad Gita?

I contend that Arjuna could not have learnt Sanskrit as he is of the warrior caste (Kshatriya). Sanskrit is the language of the Devas and only Brahmins can have access to it. Anyone else who even hears Sanskrit verses is to be subjected to unspeakable torture, as spoken in Manusmriti. 

Hence, Arjuna could not have known Sanskrit, and he could not have understood what Lord Krishna told him, as given in the Bhagwad Gita.  Q.E.D

Raghuram Ekambaram