What Is Required to Have a Quorum to Hold a Shareholder's

What is required to have a quorum to hold a shareholder's meeting?

A) Unless otherwise provided in the articles of incorporation, if a majority of shares entitled to vote are represented at the meeting in person or by proxy, there is a quorum.
B) Unless otherwise provided in the articles of incorporation, if two-thirds of shares entitled to vote are represented at the meeting in person or by proxy, there is a quorum.
C) Unless otherwise provided in the articles of incorporation, if three-fourths of shares entitled to vote are represented at the meeting in person or by proxy, there is a quorum.
D) Unless otherwise provided in the articles of incorporation, if a minority of shares entitled to vote is represented at the meeting in person or by proxy, there is a quorum.
E) Unless otherwise provided in the articles of incorporation, if one-fourth of shares entitled to vote are represented at the meeting in person or by proxy, there is a quorum.