Let A=[\table a,h,g;h,b,f;g,f,c] and B=[\table x;y;z], then what is AB equal to? [NDA-I 2020]

Correct Answer is : [ax+hy+gzhx+by+fzgx+fy+cz]

[\table ax+hy+gz;hx+by+fz;gx+fy+cz]

[\table ax+hy+gz, hx+by+fz,gx+fy+cz]