Urgent please help! I rlly need this answer before 9:00 pm!

Ethan wants to buy an action figure for $3 and several packs of trading cards for $6 each at a toy store. He can spend no more
than $39 at the store today, but if he spends $15 or more he will receive a free poster.
Write and solve an inequality where x represents how many packs of cards Ethan can buy today to receive the free poster.
O A. 3 <<7
ОВ.
3 <=<7
O C.
2 << 6
OD. 2 < < 6