The structures shown will drift equally during an earthquake $($i$.$e$.,$ the design level response displacements are the same. $(s|=s|l=s).$ There is no justification for rational analyses. Based on this information, what is the minimum required separation between these structures? Hint: $C_{dl}=4,C_{d|l}=4\mathrm{.}5,$ Importance factor is the same for both walls.

A$.$ two times the displacement $s$

B$.$ three times the displacement $s$

C$.$ five times the displacement $s$

D$.$ six times the displacement $s$