If some investors invest in each of the two Vanguard funds, then do all investors satisfy the two-fund separation theorem from the lecture?
a) Yes, all investors adhering to the two-fund separation theorem will invest in each of the two Vanguard funds.
b) No, adherence to the two-fund separation theorem does not require investment in specific funds.
c) The two-fund separation theorem applies only to individual stock investments, not mutual funds.
d) The lecture does not discuss the two-fund separation theorem in the context of Vanguard funds.
