A 28-year-old primigravida client with diabetes mellitus, in her first trimester, comes to the health care clinic for a routine visit. The client reports frequent episodes of sweating, giddiness, and confusion. What should the nurse tell the client about these experiences?

a) Insulin resistance becomes minimal in the latter half of the pregnancy
b) Tissue sensitivity to insulin increases as pregnancy advances
c) Increased secretion of insulin occurs in the first trimester
d) Use of insulin needs to be reduced as pregnancy advances