[sv-ec] reference to class definition nested in module/program /interface

I wonder if it is legal to define variable based on class type nested in
other module  - example:
 

module top;
    class C; int i; endclass
endmodule
 
 
module tb;
    top.C c=new;  //1 declaration of C type object via '.'
//vs
    top::C c=new; //2 declaration of C type object via '::'
endmodule

 
2nd is imho explicitly forbidden by LRM because :: can be used only on class
packages.
 
but what about 1st case? is it legal?
 
 
DANiel

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