The correct answer would be C.
France's difficult economic situation led Louis XVI to attempt a fiscal reform. Due to the opposition of the nobility to a tax reform that ended with privileges, the king convened the states general of 1789, an exceptional assembly that brought together members of the three states. The Thrid state, which had twice as many representatives as the other two states, dissatisfied with the system of voting by estates, that is , one vote per state, asked for a vote by people to be able to carry out their proposals.
In this way, on may 12, they invited the other states to join them in a single chamber, a proposal that was followed by some some members os the first state .
On june 17 this chamber calls itself the national assembly.