The reduction potential of hydrogen half cell will be negative if :

Question

( A ) $p(H_2) = 1$ atm and $[H^+] = 2.0 M$
( B ) $p(H_2) = 2$ atm and $[H^+] = 2.0 M$
( C ) $p(H_2) = 1$ atm and $[H^+] = 1.0 M$
( D ) $p(H_2) = 2$ atm and $[H^+] = 1.0 M$