Which property defines a primitive root modulo ppp?
An element ggg such that the order of ggg is ppp
An element ggg such that the order of ggg is p−1p-1p−1
An element ggg such that gp≡1(modp)g^p \equiv 1 \pmod{p}gp≡1(modp)
An element ggg such that gcd(g,p)=0\gcd(g, p) = 0gcd(g,p)=0