问题：
Achoosing which securities to hold based on their valuation.
Binvesting only in "safe" securities.
Cthe allocation of assets into broad asset classes.
Dbottom-up analysis.
Achoosing which securities to hold based on their valuation.
Binvesting only in "safe" securities.
Cthe allocation of assets into broad asset classes.
Dbottom-up analysis.
