GMAT Sentence Correction (SC) | More than fifty years after the Second World War, a number

More than fifty years after the Second World War, a number of African American
soldiers were awarded―some of them posthumously―with the Congressional Medal of Honor, which was the nation’s highest military award, and which was long overdue in recognition of their outstanding bravery.

A. with the Congressional Medal of Honor, which was the nation’s highest military award, and which was long overdue in
In this i would prefer to remove "which was the highest military award" as the award could still be the highest.
as for "awarded with" & only "awarded" I think both are idiomatically correct. So to eliminate an answer choice because of that would be wrong. If it had been "rewarded" then "rewarded with would only have been correct"
...

---