I would think that 'G' would also be correct, in a base higher than 16, just like how 11 is just 0xB, 013, and 0b1011, depending on your perspective.

He asked 'in hex', which means 'in base 16'. It's not open to different perspectives.

Apparently I can't read today :).

perhaps this is a good example of how even this question might count as 'tricky under high pressure' :)

He explicitly said "hex"

No that wouldn't be a hex(adecimal) number.