Jack, Who Recently Retired, Wants to Invest in a New

Jack, who recently retired, wants to invest in a new upstart local company. As part of the deal for investing in The Turmoil Corp., the company has agreed to give Jack "...some sort of maintenance or security job for as long as he feels able". This agreement would best be placed

A) in a separate side agreement as to avoid clutter and confusion.
B) in the by- laws, since it will need changing.
C) in the charter.
D) under seal since it lacks consideration.
E) in writing since it falls under the Statute of Frauds.