Answer:
[C]
Explanation:
Based on the information provided within the question it can be said that this client will need to make the required payment in full for the purchase prior to entering the order because the account would be frozen. This is because the Reg T states that any individual that has been sold out for failing to make a prompt payment will have their account frozen for 90 days and if they want to make a buy order, then they need to deposit enough money to cover the entire trade in full including fees before the buy order is actually entered.