Five jobs $A, B, C, D$ and $E$ are waiting in Ready Queue. Their expected runtimes are $9, 6, 3, 5$ and $x$ respectively. All jobs entered in Ready queue at time zero. They must run in _____ order to minimize average response time if $3 < x < 5$.
- $B, A, D, E, C$
- $C, E, D, B, A$
- $E, D, C, B, A$
- $C, B, A, E, D$