Brian contributes to his RRSP and RESP. Brian is the sole subscriber of the RESP for his son, Peter. Peter passed at the age of $15$ due to an unexpected illness. At the time of death, the RESP was worth $$50,000.$ Brain had contributed $$25,000$ to the RESP to which he received $$5,000$ in government grants. Brian$$s marginal tax rate is $35\%.$ Brian has $$25,000$ in RRSP room. How much of the accumulated income $($AIP$)$ can Brian transfer to his RRSP$?$

a$.$ $$20,000$

b$.$ $$6,750$

c$.$ $$15,000$

d$.$ $$9,750$