Software version $1\mathrm{.}0$ has been released. Late in the development, software version $1\mathrm{.}0$ was branched to create a software version $2\mathrm{.}0$ code base. Which of the following collection of software issues are planned for and tested in software version $2\mathrm{.}0?$

A$.$ Defects identified and fixed prior to software version $1\mathrm{.}0\text{'}$s code branch.

B$.$ Defects identified and fixed after software version $2\mathrm{.}0\text{'}$s code branch.

C$.$ Defects deferred from software version $1\mathrm{.}0.$

D$.$ Defects deferred to software version $3\mathrm{.}0.$

E$.$ Bugs identified and fixed after software version $2\mathrm{.}0\text{'}$s code branch.