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x is a 4-digit positive integer whose digits are all the integer n. Which of the following must be true?
i. The sum of the digits of x is even.
ii. The product of the digits of x is even.
iii. It is not divisible by 12.
A. i only
B. iii only
C. i and ii only
D. i and iii only
E. ii and iii only
[spoiler]OA=D[/spoiler]
Source: Veritas Prep
i. The sum of the digits of x is even.
ii. The product of the digits of x is even.
iii. It is not divisible by 12.
A. i only
B. iii only
C. i and ii only
D. i and iii only
E. ii and iii only
[spoiler]OA=D[/spoiler]
Source: Veritas Prep
