The Following Can Be Considered as the Rationale Behind Reserva

The following can be considered as the rationale behind reserva troncal, except:

A) To reserve certain property in favor of certain relatives.
B) To maintain as absolutely as possible, with respect to the property to which it refers, a separation between the paternal and maternal lines, so that property of one line may not pass to the other, or through them to strangers.
C) To prevent persons outside of a family from securing, by some accident of life, property that would otherwise remain therein.
D) To show solidarity of the family.