For a function, f(x), on an interval I, recall that the oscillation of f on I is defined as w(f; I) =sup f(x) - inf f(ac) rEl Select all of the following which are correct calculations of the oscillation for the given function and interval Oi) f(x) = sin( 2 pi x ) and I = [0,1] w( f; I) = 2 O ii) f(x) = sin( 3 pi x ) and I = (0,1) w( f; I) = 2 iii) f(x) = sin(pi x) and I = [0,1] w( f; I) = 1 Div) None of these are correct