Assertion(A) : Endothermic compounds are stable than the exothermic componds.
Reason(R ) : Endothermic compounds have positive enthalpy of formation.
A. Both `A`and `R` are true and `R` is the correct explantion of `A`
B. Both `A`and `R` are true and `R` is not a correct explantion of `A`
C. `A` is true but `R` is false
D. `A` is false but `R` is true