To Create a __________ a User Calculates Two Quantities, R

Multiple Choice

to create a __________ a user calculates two quantities, r and s, that are functions of the public key components (p, q, g) , the user's private key (x) , the hash code of the message H(M) , and an additional integer k that should be generated randomly or pseudorandomly and be unique for each signing.

A) signature
B) hash authentication
C) secret key
D) global key