Objects and Dynamic Typing Assume x is $3,$ y is $7\mathrm{.}1$ and z is $\text{'}11\mathrm{.}5\text{'}.$ Which of the following statements is incorrect?

Group of answer choices

a$.$ type$($x$)$ is int

b$.$ the value of z is $11\mathrm{.}5$

c$.$ the value of y is $7\mathrm{.}1$

d$.$ type$($z$)$ is str