(单选题)7: 若a=1,b=2,下面程序执行后,a和b的值分别为 。
architecture rtl of entityName is
signal a, b: integer;
begin
process (a, b)
variable c: integer;
begin
a <=b ;
c := a ;
b <= c ;
end process;
end rtl ;
A: 1,2
B: 2,1
C: 1,1
D: 2, 2
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