Suppose that a a) If f is Riemann integrable on [a, b], then f is continuous on [a, b].
b) If |f| is Riemann integrable on [a, b], then f is Riemann integrable on [a, b].
c) For all bounded functions f : [a, b] †’ R,

d) If f is continuous on [a, b) and on [b, c], then f is Riemann integrable on [a, c].

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(L) | f(x) dx: f(x) dx (U)| f(x) dx