Fill in the blank (_) in the following sentence from the following choices.
Sentence: Windows tried to cut down on costs by putting new software on a old computer, but the _ size exceeded capacity.

Choice 1: Windows tried to cut down on costs by putting new software on a old computer, but the software size exceeded capacity.
Choice 2: Windows tried to cut down on costs by putting new software on a old computer, but the computer size exceeded capacity.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1.