In the Nelson-Siegel Framework, Which of the Following Statements Is $A ( t ) = a + b e ^ { - t / d } + c ( t / d ) e ^ { - t / d }$

Multiple Choice

In the Nelson-Siegel framework, which of the following statements is valid? Let the notation used to describe the fitting function be the following: $A ( t ) = a + b e ^ { - t / d } + c ( t / d ) e ^ { - t / d }$

A) $\alpha$ determines the slope.
B) $b$ determines the location of the hump.
C) $C$ determines the hump shape.
D) $d$ determines the long-term rate.