What is the order of operations to be performed in order to realize linear phase IIR filter?

[answerhappygod]

(i) Passing x(-n) through a digital filter H(z)
(ii) Time reversing the output of H(z)
(iii) Time reversal of the input signal x(n)
(iv) Passing the result through H(z)
a) (i),(ii),(iii),(iv)
b) (iii),(i),(ii),(iv)
c) (ii),(iii),(iv),(i)
d) (i),(iii),(iv),(ii)