Which one of the following statements is true with regards to the RUN function?

Maps invoked via RUN are not required to reside in the same map source file as the calling map; they can be located in separate map sources.

Compiled maps called via RUN do not need to be in the same directory as the calling map; the runtime environment can locate them from different directories.

The first argument of the RUN function must be the name of a compiled or executable map, not a functional map; functional maps are not directly invocable as the primary argument of RUN.

The RUN function allows the calling map to pass dynamically constructed source and/or destination file names as arguments at runtime, making it possible to process variable or computed file paths - this is a core and unique feature of RUN compared to static map invocation methods.