premise: Eight files will be ordered from first to eighth. Each file falls into exactly one of three categories: red files (H, M, O), green files (P, V, X), or yellow files (T, Z). The files must be ordered according to the following conditions: H must be placed into some position before O, but H cannot immediately precede O. X must be placed into some position before V. X and V must be separated by the same number of files as separate H and O. Z must immediately precede M. The first file cannot be a red file. Which one of the following is an acceptable ordering of the files from first to eighth?
hypothesis: H X O V Z M P T