The bid sides of the book at three market centers are:

price	Exchange A		Exchange B		Exchange C
Shares Displayed	Shares hidden	Shares Displayed	Shares hidden	Shares Displayed	Shares hidden
10.49	100	700	100	2000
10.48	200	100	200	200
10.47	400	500	200	400
10.46	700	1000
10.45	800	200	2000

Question

1.A trader simultaneously sends the following sell orders, all with limit prices of 10.46, all marked ISO: sell 800 to A, sell 2000 to B, sell 500 to C. What executions occur?

2.After the order in part (1) is executed, exchange C receives a sell order for 200 shares stop $10.49, limit 10.47 ( not sweep). What executions occur if any? Specify the exchange, the price and the shares. ?