I want to know the answer to the following question:
What writing mentions the Arian accusation that Athanasius was under aged?
All the background I'm provided with is that "However Cornelius Clifford places his birth no earlier than 296 and no later than 298, based on the fact that Athanasius indicates no first hand recollection of the Maximian persecution of 303, which he suggests Athanasius would have remembered if he had been ten years old at the time.". Is that enough to answer the question?
Answer: no