Which of the following is/are true regarding hex digits? A. Hex digits are made of 4 bits. B. Hex digits are made of 4 bytes. C. Hex can be expressed as 0–9 and A–G. D. Hex can be expressed as 0–9 and A–F. Solution A and D are correct. Hex digits are 4 bits in length and can be manipulated to display the alphanumeric characters 0–9 or A–F. B and C are incorrect. B is incorrect because hex digits are made of 4 bits, not 4 bytes. C is incorrect because hex digits can only represent characters up to F..