Which of the following will be legally binding on all parties despite lack of consideration?

A) An irrevocable oral promise by a merchant to keep an offer open for 60 days.
B) A promise to donate money to a charity,which the charity relied upon in incurring large expenditures.
C) A promise to pay for the college education of the child of a person who saved the promisor's life.
D) A signed modification to a contract to purchase a parcel of land.

Identify and briefly describe the four sources that HR planners use to keep current with business and HR trends.

Assume that an investor invests in one risky and one risk free asset. Let σ_m be the standard deviation of the risky asset and b the proportion of the portfolio invested in the risky asset. The standard deviation of the portfolio is then equal to:

A)
B)
C) (1 - b)
D) b

As people tend to make comparisons during analysis from a tabulation, the totals are helpful in communicating quantitative information.