Why does the evaluation of abnormal Papanicolaou (Pap) tests during pregnancy become complicated?

1) The cervix is larger.
2) The cervix is more oval in shape.
3) The cervix is more soft and velvety.
4) The squamocolumnar junction is located away from cervix.
(EAQ - CH 12 and 13)

a) 1, 2, 3
b) 1, 2, 4
c) 2, 3, 4
d) 1, 3, 4