Cockroaches Limited acquired the identifiable assets and liabilities of Inglis Limited for $268,000. The items acquired, stated at fair value, are: plant $144,000; inventory $80,000; accounts receivable $36,000; patents $20,000; and accounts payable $32,000. The difference on acquisition is:

a.

goodwill of $20 000.

b.

gain on bargain purchase $20 000.

c.

gain on bargain purchase $32 000.

d.

goodwill of $248 000.