Here are all the results with descriptions
Tell the truth
In your situation, there is nothing to be gained with a blatant lie, lie of omission, or even a little white lie. While those things can be useful to spare feelings or avoid disaster, your situation does not call for it. Go ahead and do the right thing and tell the truth.
Tell a version of the truth
Your situation calls for tact and finesse in telling the truth. The truth is important, but it's also important to deliver your truth in a way that is kind for everyone. Tell the truth but word it carefully and considerately.
Tell a half truth
In your situation, a little truth is necessary but the whole truth might be best reserved for later or not divulged at all. Give away only what is necessary to ensure the best outcome for all involved. Don't overdo things with too much information.
Hint at the truth
You might not be the best person to tell the truth, or, the truth in its fullness may be too much information for a positive outcome. Maybe the recipient needs a nudge to discover the truth on their own. Give them a hint, but don't offer up too much.
Not tell the truth
There are very few instances in which lying or concealing lies of omission are the moral or ethical best choice. However, you seem to be in one of those situations. If being dishonest is troubling for you, think about what your response will be if asked a direct question about the truth.