Under the Variable-Ratio Plan, Additional Speculative Investments Are Made When

Under the variable-ratio plan, additional speculative investments are made when the ratio

A) of conservative investments to speculative investments increases by 10%.
B) of the rate of return on the speculative investments exceeds the overall market return by 1% or more.
C) of the realized rate of return falls below the desired rate of return by 1% or more.
D) of the value of the speculative investments to the total portfolio value drops below a predetermined level.