(M-CSV-1) One of the purposes of the Measure Phase is to identify a set of X's which may be responsible for observed defects -- "typically through data collection, analysis and pattern identification. From the list below, select the statement(s) that accurately characterize such Capability Studies. A problem centering between customer specifications. Are most appropriately used on unstable, highly fluctuating processes. Can be performed on either Discrete or Continuous data. Require a thorough understanding of the customer's specification limits. Only need to be performed as-needed, when process variability exceeds tolerances