Let $f ( x ) = \ln x$ On $[ 1 , e ]$

Multiple Choice

Let $f ( x ) = \ln x$ on $[ 1 , e ]$ Then the set of all c in (1,e) guaranteed by the Mean Value Theorem is

A) $\{ 1.5 \}$
B) $\{ e - 1 \}$
C) $\{ 2 \}$
D) $\{ 2.5 \}$
E) $\{ 1.5 , e - 1 \}$