Scores on Ms$.$ Nash's test have a mean of $64$ and a standard deviation of $9.$ Steve has a score of $52.$ Convert Stev score to a $z-$score. $($Round to two decimal places if necessary.$)$

a$)-1\mathrm{.}33$

b$)-2$

c$)58\mathrm{.}2$

d$)1\mathrm{.}33$