Based on beta, which portfolio has the highest level of systematic risk? Show your work

Portfilio 1 Security Amount Invested Expected Return Beta Security A $4000 9% .80 Security B $5000 12% 1.15 Security C $12000 14% .95 Security D $8000 15% 1.23

Portfolio 2 Security A $3000 16% 1.22 Security B $11000 13% 1.54 Security C $9000 8% .87 Security D $6000 11% .81 Portfolio 3 Security A $15000 10% 1.72 Security B $12000 9% .81 Security C $3000 12% .72 Security D $2000 15% 1.54