Which of the following is/are correct?

$\mathrm{\Delta H}=\mathrm{\Delta U}+\mathrm{\Delta }\left(\mathrm{PV}\right)$ when P and V both changes

$\mathrm{\Delta H}=\mathrm{\Delta U}+\mathrm{P\Delta V}$ when pressure is constant

$\mathrm{\Delta H}=\mathrm{\Delta U}+\mathrm{V\Delta P}$ when volume is constant

$\mathrm{\Delta H}=\mathrm{\Delta V}+\mathrm{P\Delta V}+\mathrm{V\Delta P}$ when P and V both changes