5. (15 points) The following ciphertext message is known to be enciphered using a running key cipher. It is also known that the word comprehensive appears in the plaintext. Cryptanalyze the message (Explain your approach to each problem that you do. Determine as much of the key as you can. Determine the type of cipher if you can.).

TZACEZ ZCHQFK DLVPRG WZZWNV VVGRJM XPHWVH MLHVNT UOWOCE IVLFXH JIZEAC PAENFV IYSLQD SBYZGB ABNTGI EYQGEF ECMZVF HXBEHP NBBDIK BHDAVW GZNKMV XBSIYZ CBBWAG PDVRKR LMWTQA MHWGEQ UDWZJS ATZZLA YHOGPO RMZFIA HJIOGR FDGLZZ WITGJE DTSNHV JYCUGM HHTIVG ZFHMNA JUWXWZ QNRXUT LHIELS GKQSPC WEZZHT EGOSYA APLRFG BGVFQY KQRTVS MOVSWU UDMQFK VOMTNF KADUAC SJTTRD PBNGFG KGFSVX FB