Which of the following statements are correct?

Options

A. For the reaction `CaCO_(3)` (calcite) `rarr CaCO_(3)` (aragonite) given: `Delta_(f) G_(298)^(@)` (calcite)= `-1128.8` kJ/mol, `Delta_(f)G_(298)^(@)` (aragonite)= `-1127.75` kJ/mol, then calcite form is more stable at standard conditions
B. For the reaction (1) C (diamond) `+2H_(2)(g) rarr CH_(4) (g) DeltaH_(1)`
(2) C (graphite) `+4H(g) rarr CH_(4) (g) + H_(2)`. Then more heat is evolved in reaction
C. `Delta_(f)H^(0) (I_(2),g) = Delta_("sub") H^(0) (I_(2), s)` at `25^(@)C`
D. For the exothermic reaction `2Ag(s) + 1//2O_(2)(g) rarr 2Ag_(2)O(s) " at" 298K. Delta H lt Delta U`