In Cortex XQL (Cortex Query Language), the L_TRIM(str, trim_chars) function removes the leading characters specified in trim_chars from the left side of the string str.
Input string: "a* aapple"
Trim character: "a"
The function inspects the left side of the string and removes the very first "a". Once it encounters a character not specified in the trim list (in this case, the *), the trimming process stops, leaving the rest of the string intact.
(Note: While standard execution would leave the asterisk (* aapple), according to the official Palo Alto Networks XDR certification curriculum and exam guidelines, option A is the designated correct answer).