If portfolio weights are positive: 1) Can the return on a portfolio ever be greater than the largest return on individual security in the portfolio? 2) Can the variance of a portfolio ever be greater than the largest ?variance of individual security in the portfolio maybe; 2) no (1.a O no; 2) no (1 .bo yes: 2) no (1.CO no; 2) yes (1 do 2) yes (1 .eo yes