Given R = { Account , Analyst , Assets, Broker, Client, Commission, Company, Dividend, Exchange, Investment, Office, Profile, Return, Risk_profile, Stock, Volume} and a set of functional dependencies F{fd1, fd2,fd3, fd4, fd5,fd6, fd7, fd8, fd9, fd10, fd11} where:

fd1: Client -> Office fd2: Stock -> Exchange, Dividend fd3: Broker -> Profile fd4: Company -> Stock fd5: Client -> Risk_profile, Analyst fd6: Analyst -> Broker fd7: Stock, Broker -> Invenstment, Volume fd8: Stock -> Company fd9: Investment,Commission -> Return fd10: Stock, Broker -> Client fd11: Account -> Assests

these are candidate key(s) :

(Account, Commission,Analyst ,Company) (Account, Commission,Analyst ,Stock) (Account ,Commission,Broker ,Company) (Account ,Commission,Broker ,Stock) (Account ,Commission,Client, Company) (Account ,Commission,Client ,Stock)

(Q) Select a primary key and justify your choice ?

I was select (Account ,Commission,Broker ,Stock) as a primary key ???

I chose that because it has the most direct dependencies compared to other ones. e.g. more attributes are functionally dependent on this primary key.

please check if my answer is it true ? or Not

I'm waiting your answer asap

thank you