The board of directors of QC Technology, Inc. (QCT), a publicly-traded manufacturer of semiconductors and electronics, hires an advisory team to complete an external review of the board's performance.
Alex Quinn, an analyst on the external advisory team, summarizes QCT's current structure in Exhibit 1.
Quinn notes that two directors are executives of significant QCT suppliers and each holds 10% of QCT's shares. QCT maintains a similar ownership stake in each supplier. QCT's founder, who is the largest QCT shareholder, also sits on the board of directors for each supplier.
QCT's current company ownership structure is best described as:
A vertical.
B dispersed.
C horizontal.
C is correct.
请问：为什么选择C？以及horizontal和vertical不都是属于 dispersed ownership吗？
