Chemical equation if there is a catalyst and heating, which write in the equal sign above

Chemical equation if there is a catalyst and heating, which write in the equal sign above, which written in the following? Tomorrow academic level test, solution

This do not care The But in general the catalyst is written on the equal sign is better ...

At the same time, the catalyst is written on, and the heating symbol is written under the equal sign. Only one is written on the equal sign

At the same time, the catalyst is heated