Match the transformation in Column I with appropriate option in Column II.

Explanation

`[A to p,r,s] [B to r,s] [C to t][D to p,q,t]`
(A) `CO_(2)(s) to CO_(2)(g)`
It is just a phase transition (sublimation) as no chemical change has occurred. Sublimation is always endothermic. Products is gas, more disordered, hence `DeltaS` is positive
(B) `CaCO_(3)(g) to CaO(s) + CO_(2)(g)`
It is a chemical decomposition, not a phase change. Thermal decomposition occur at the expense of energy, hence endothermic. Product contain a gaseous species, hence, `DeltaS gt 0`
(C ) `2H to H_(2)(g)`
A new H-H covalent bond is being formed, hence, `DeltaH lt 0`. Also, product is less disordered than reactant, `DeltaS lt 0` .
(D) Allotropes are considered as different phase, hence `P_("white, solid") to P_("red, solid")` is a phase transitions as well as allotropic change.
Also, red phophorus is more ordered than while phosphorus, `S lt 0`