2) (10 marks) Assume variables x,f, and d are of type int, float, and double, respectively. Their values are arbitrary, except that neither f nor d equals +,, or NaN, For each of the following C expressions, either argue that it will always be true (i.e. evaluates to 1 ) or give a value for the variables such that it is not true (cvaluates to 0 ). a) x=( int )( double )x b) f=(float)( double) f c) dn= (double) (float)d d) x=( int )(float)x e) f=m(f) f) dd>=0.0 g) 1.0/2=1/2,0 h) (f+d)f=nd