Arrange the following events of meiosis I in the correct sequence of their occurrencea. Terminalisation of chiasmatab. Synapsisc. Crossing overd. Appearance of X-shaped structure

Synapsis is seen in zygotene while, crossing over takes place in pachytene. X-shaped structure of chiasmata is seen during diplotene whereas, terminalisation of chiasmata is seen in diakinesis.