Q3·Section I (General (compulsory))·3 of 145f=xf=xf=x on Q\mathbb{Q}Q, 000 off Q\mathbb{Q}Q: squeezed to 0 only at the originLet f(x)=xf(x)=xf(x)=x if xxx is rational, =0=0=0 if xxx is irrational, then: OptionsAfff is continuous on R\mathbb{R}RBfff is continuous on R\mathbb{R}R except at originCfff is discontinuous at all points except at originDfff is discontinuous at all points of R\mathbb{R}RPick an option to check your answer.Show answerShow solution Report a problem with this question← Q2All questionsQ4 →Keyboard: A–D answer · S solution · ←/→ previous/next