Question $3(2\mathrm{.}5$ points$)$

Pacific Highway is a four$-$lane road connecting downtown to the coastal areas. Assume each lane has a capacity of $40$ cars per minute. Due to recent surface wear, the capacity of one lane is decreased by $25\%.$ Additionally, another lane experiences periodic closures for maintenance $50\%$ of the time. What is the total capacity of Pacific Highway $($cars$/$minute$)?$

$($a$)60$

$($b$)90$

$($c$)110$

$($d$)120$