What makes a Capital Market efficient?

Select $2$ correct answer$($s$)$

Question $1$ options:

That the price of the investment reflects, in real time, all of the available information and that there are a large pool of investors

That Company insiders and their friends and families have early access to information and make trades based on that information

That all investors have access to the same information at the same time

That only a few investors get new information early and thereby use that information to set prices