A four $(4)-$legged intersection has the following hourly traffic volumes:

The intersection is designed to have the following three $(3)$ phases:

Phase A for the northbound $($NB$)$ and southbound $($SB$)$ approaches:

Phase B for the eastbound $($EB$)$ approach; and

Phase $C$ for the westbound $($WB$)$ approach.

Assume that each intersection approach has one $(1)$ lane. The saturation discharge headway is

equal to $2\mathrm{.}0$ seconds, and the lost time per phase is equal to $3\mathrm{.}4$ seconds. The minimum cycle

length for this intersection, when rounded up to the nearest $5$ seconds, is:

$60$ seconds

$75$ seconds

$85$ seconds

$90$ seconds