Dehydration without water replacement results in a drop in blood pressure. Assuming flow must remain constant, how would your body respond to return the blood pressure to normal values?

a) lower blood volume increases the osmolarity of the blood attracting water into the circulatory system

b) blood pressure will increase if the total peripheral resistance increases

c) increased sympathetic stimulation will increase vasoconstriction of the muscular arteries

d) two of the above

e) all of the above

Please select correct answer and also provide explaination.