Aaron, thanks for answering these questions. What is the YC Series A program's advice to founders around giving round allocation to prior investors? Is there a

Aaron, thanks for answering these questions. What is the YC Series A program's advice to founders around giving round allocation to prior investors? Is there an official stance on who should be let in? I've found with popular YC seed rounds that the founders turn to their YC partners to ask who should get in. Extending this to A's is a bit scary from a concentration of power standpoint.