Let Two Time Points $t _ { 1 }$ And $t _ { 2 }$

Multiple Choice

Let two time points, $t _ { 1 }$ and $t _ { 2 }$ , on a yield curve be given, and let $y \left( t _ { 1 } \right)$ , $y \left( t _ { 2 } \right)$ be the yields at these maturities. You want to draw an interpolating curve between these maturities and are considering three alternatives:
-Linear (L) : $y ( t ) = y \left( t _ { 1 } \right) + x \cdot \left( t - t _ { 1 } \right)$ .
-Exponential (E) : $y ( t ) = y \left( t _ { 1 } \right) e ^ { x \left( t - t _ { 1 } \right) }$ .
-Logarithmic (G) : $y ( t ) = y \left( t _ { 1 } \right) \left[ 1 + \ln \left( 1 + x \cdot \left( t - t _ { 1 } \right) \right) \right]$ .
Since the interpolated curves will not coincide perfectly except at the two end-points, interpolated yields will be higher under some methods versus the others. What is the rank-ordering of size of interpolated yields?

A) $L < E < G$
B) $E < G < L$
C) $G < L < E$
D) $E < L < G$