Answer:
should Lemu and Young disclose their relationship with Ego?
Yes
Step-by-step explanation:
Both Lemu and Young should disclose their relationship.
Since Ego can influence both Lemu and Young, and Lemu and Young are under the common management of Ego.
Lemu and Young are part of the consolidated entity of Ego. Therefore, that fact should be disclosed in both (subsidiaries) Lemu's and Young's financial statements.