A. The single asterisk will match any number of characters, including none. It does include separator characters, such as \ or /, which separate portions of a file path
B. The single asterisk will match any number of characters, including none. It does not include separator characters, such as \ or /, which separate portions of a file path
C. The single asterisk is the insertion point for the variable list that follows the path
D. The single asterisk is only used to start an expression, and it represents the drive letter
Explanation:
Reference: https://docs.microsoft.com/en-us/azure/machine-learning