The exposition: Introduces the story in <em>Verona</em>, there are <em>two major families</em> who <em>don’t get along</em> - <em>Montagues and Capulets</em>.
Rising Action: Romeo and Juliet - both from families that hate each other - <em>fall in love and wed in a secret.</em>
Complication of the plot: Romeo is banished from Verona.
Reversal: <em>Juliet takes the poison</em>, Romeo misses her message and when he comes back <em>he sees her apparently dead.</em>
Catastrophe: Romeo <em>takes his own life thinking Juliet is dead</em>. Juliet <em>wakes up</em> and sees what happens. <em>She kills herself with a dagger.</em>
Moment of last suspense: What happens next? <em>Both families make amends</em> and vow not to fight in respect of the dead couple.
I´d say A. Others don´t make much sense in the context.