Suppose you$-$are setting up a full$-$mesh network for $x$ users; and $n,$ the number of twoway connections required to link all users pairvise, must be no greater than $132.$ For what range of $x$ values can you set up your network?

$\frac{x(x-1)}{2}=n$

a$.$

$17$ or less users

b$.16$ or more users

c$.$

$16$ or less users

d$.17$ or more users