Answer:
Jill's : Up to $500,000
Jack's : Up to $500,000
Joint account : Up to $500,000
Step-by-step explanation:
SIPC is created to protect clients of brokerage firm that goes insolvent.
It provides up to $500,000 per capacity for customers that lost investment in securities in the institution while up to $250,000 coverage is meant for cash in the account that is not invested in securities.
Customer with different accounts are assessed by separate capacity. Different accounts held in the same capacity are merged for the sake of compensation.
Concerning couples with different accounts and a joint account . each of the couple are treated as different capacities while the joint account is also treated as another capacity