The set of all real numbers x for which
\log _{2004}\left(\log _{2003}\left(\log _{2002}\left(\log _{2001} x\right)\right)\right)
is de ned is \{x \mid x>c\}. What is the value of c ?
Answer Choices
A. 0
B. 2001^{2002}
C. 2002^{2003}
D. 2003^{2004}
E. 2001^{2002^{2003}}