Which of the following statements are true about "payment for order flow"? (Select all that apply; two of the answers below are correct.)

Group of answer choices

Payment for order flow is the term used for the commissions that we pay to place trades on a stock exchange.

Payment for order flow is a common practice used by many no-fee brokers such as Robinhood.

Payment for order flow has been banned in the US and is currently illegal.

Payment for order flow is a practice in which market makers pay retail brokers for their clients order flow (ie, the right to execute client's trades).