2.) Consider the limit order book below for asset X.

Bid Size	Bid Price	Ask Price	Ask Size
100	$21.00	$21.50	50
150	$20.50	$22.00	50
100	$20.00	$22.50	100

1. Suppose that a trader wants to sell 200 units of asset X immediately (market order), what is the average price this trader will receive (per unit)?

1. Suppose that a trade wants to buy 75 units of asset X immediately (market order), what is the average price this trader will pay (per unit)?

3.) Today, a trader takes a long position in four (4) June 2021 crude oil futures contracts (the trader is agreeing to buy oil in the future) at $42.05 a barrel. The contract unit is 1,000 barrels of oil per contract. The initial margin requirement is $9,000 per contract and the maintenance margin is $6,500 per contract.

a.) What is the notional value of the traders position?

b.) What is the dollar amount that the trader must deposit as margin for this position?

c.) At what price (per barrel of oil) will the trader receive a margin call?