Five assets have expected mean returns and standard deviations as follows:(1) 8% 15%; (2)12% 18%; (3) 11% 18%; (4) 15% 20%; (5) 11% 17%.Which of these assets will be rejectedby all rational risk-averse investors?

A.(4) and (5)

B.(2) and (4)

C.only (3)

D.only (5)

E.(2) and (3)

please provide some explanation please