The countours of a function f are shown in the figure below.For each of the points shown, indicate whether you think it is a local maximum, local minimum, saddle point, or none of these.a$)$ Point P is $?$a local maximuma local minimuma saddle pointnone of these$($b$)$ Point Q is $?$a local maximuma local minimuma saddle pointnone of these$($c$)$ Point R is $?$a local maximuma local minimuma saddle pointnone of these$($d$)$ Point S is