Problem $4\mathrm{.}1$

$*$ abc$1234($HEAD $->$ main$)$ Merge branch 'release$-1\mathrm{.}0\text{'}$

$|\backslash$

$|*$ def$5678($release$-1\mathrm{.}0)$ Merge branch 'feature$-$b$\text{'}$ into release$-1\mathrm{.}0$

$||\backslash$

$||*$ ghi$9012($feature$-$b$)$ Add feature B

$|*|$ jkl$3456$ Prepare for release $1\mathrm{.}0$

$||/$

$*|$ mno$7890$ Continue development on main

$|/$

$*$ pqr$2345$ Merge branch 'feature$-$a$\text{'}$

$|\backslash$

$|*$ stu$6789($feature$-$a$)$ Add feature A

$*|$ vwx$0123$ Update README

$|/$

$*$ yza$1357$ Initial commit

Questions:

$1.$ How many merge commits are there? Identify them.

$2.$ In what order were the feature branches merged?

$3.$ Describe the likely workflow that led to this Git history.

$4.$ Were there any potential merge conflicts? If so$,$ between which branches and why?