When we come across a new word while reading ,we can just guess what it means without ____tioAary

题目

When we come across a new word while reading ,we can just guess what it means without ____tioAary
When we come across a new word while reading ,we can just guess what it means without ____ in a dictionary.
A.looking for it
B.looking it out
C.looking it up
D.looking up it
错了，上面的不是 下面的才是 请回答的人不要看错了

答案

C.looking it up