Answer:
C. 100 cc
Step-by-step explanation:
The choices for this answer are
A. 90cc
B. 120cc
C. 100cc
D. 50cc
We just need to subtract to find the answer.
Remember that the intake is the difference between the total amount of cc and the number of cc that remains.
So, if there's 50cc left in the glass, and its capacity is 150cc, that just means your intake was 100cc, because

Therefore, you need to record the intake as 100cc, the right answer is C.