Correct option is A
Both Agamemnon and The Libation Bearers are part of Aeschylus' Oresteia Trilogy. Written by Aeschylus in the 5th century. The only extant Greek trilogy.
Information Booster:
The Oresteia Trilogy is a series of three Greek tragedies that tell the story of the House of Atreus, a cursed family plagued by violence and revenge. The first play, Agamemnon, depicts the murder of the king, Agamemnon, by his wife, Clytemnestra, and her lover, Aegisthus.
The second play, The Libation Bearers, shows how Agamemnon's son, Orestes, returns to Argos to avenge his father's death by killing Clytemnestra and Aegisthus.
The third play, The Eumenides, follows Orestes as he is pursued by the Furies, the vengeful spirits of his mother. The Oresteia Trilogy is one of the most famous and influential works of Greek tragedy, and it has been performed and interpreted countless times over the centuries. It is a complex and powerful exploration of themes such as justice, revenge, and the cycle of violence.
Additional Knowledge:
Electra is a tragedy by Sophocles. Set a few years after trojan war where the struggle for justice by Electra and Orestes for the murder of their father Agamemnon by Clytemnestra and her lover is shown.