Does Elven Accuracy work with Oath of Enmity

Question

If a character has activated their Oath of Enmity, how does Elven Accuracy applied ?

So, e.g. the character rolls two attack dice, and gets a 5 and 7, and they decide to activate their Elven Accuracy ...

Do they get just 1 extra roll, or 2 rolls ?

My thinking here is the Elven Accuracy states "You make an attack roll. Reroll the attack roll", and the Oath of Enmity is "you make two attack rolls and use either result"

Or could they get 2 rolls from the 'Oath', and then get 2 rolls from the 'Elven'

Answer 1

You reroll both dice

The answer is already given in the last sentence of the Oath of Enmity's^[DDI] description:

[...] If an effect lets you reroll an attack roll and you rolled twice because of this power, you reroll both dice.