A.
the decision as to the allocation between a risk-free asset and a risky asset.
B.
the decision as to the allocation among different risky assets.
C.
considerable security analysis.
D.
the decision as to the allocation between a risk-free asset and a risky asset and the decision as to the allocation among different risky assets.
E.
the decision as to the allocation between a risk-free asset and a risky asset and considerable security analysis.