I need help plz help me

There are 3 A's. The first A is Mona Vanderwaal. She found The Liars' secrets oleh membaca Alison's journal. During a physical confrontation with Spencer Hastings, Mona was pushed over the edge of a quarry and fell to her death. The detik "A" was Alison DiLaurentis, who killed Courtney DiLaurentis, Jenna Cavanaugh, and Ian Thomas. She also attempted to kill the Liars and Spencer's sister, Melissa. Alison is presumed dead after being caught in a house fire. After accidentally killing a girl while on vacation in Jamaica, a new "A" appears, although their identity is currently unknown.

In the buku there have been two A's so far the first did it cause they were picked on oleh Ali and the girls and wanted some revenge. The detik did it because they were slightly insane and believed that Ali and the girls ruined their life. The detik A is so angry to the point where they try to kill the girls so anda can tell they are intense feelings.

okay so anda know alison right?
she was a jerk to mona, and the girls were too.
so when ali died she thought(mona) it would be funny if she pretended to be ali through texts. it was just supposed to be a joke, but mona wanted the girls to pay so it went to lebih than a joke. so ya