C-09-Q131mediumsingle_mcqRange of f(x)=∣x∣f(x) = |x|f(x)=∣x∣ is:aRRRb(0,∞)(0, \infty)(0,∞)c[0,∞)[0, \infty)[0,∞)d{−1,1}\{-1, 1\}{−1,1}