For \(\mathrm{A}_2+\mathrm{B}_2 \rightleftharpoons 2 \mathrm{AB}\)
\(\mathrm{E}_{\mathrm{a}}\) for forward and backward reaction are 180 and \(200 \mathrm{~kJ} \mathrm{~mol}^{-1}\) respectively
If catalyst lowers \(\mathrm{E}_{\mathrm{a}}\) for both reaction by \(100 \mathrm{~kJ} \mathrm{~mol}^{-1}\).
Which of the following statement is correct?

1. A Catalyst does not alter the Gibbs energy change of a reaction.
2. B Catalyst can cause non-spontaneous reactions to occur.
3. C The enthalpy change for the reaction is \(+20 \mathrm{~kJ} \mathrm{~mol}^{-1}\).
4. D The enthalpy change for the catalysed reaction is different from that of uncatalysed reaction.