After the Reign of Chaos event ends, there are 4 rewards distributed by R5 ; Guild Master reward 1..

After the Reign of Chaos event ends, there are 4 rewards distributed by R5 ; Guild Master reward 1/1, core reward 19/19, power house reward 90/90 and member reward 90/90. If the member score a rank of 15 (exceed 10,000 points), would R5 by default to distribute Core reward? Or would the R5 have the option to refuse distribute Core reward but distribute Power house reward instead?