What is the function of the blood?

I - Transport of substances
II - Thermal transfer
III - Buffering action
IV - Transmission of signals (Hormones)
V - Defense action against foreign bodies and microorganisms
a) I, II, III, IV and V are correct.
b) I, II, III and IV are correct.
c) I, II, IV and V are correct.
d) II, III, IV and V are correct.
e) I, III, IV and V are correct.