Concept:The remainder when a number is divided by 12 can be found by performing long division or using repeated subtraction of multiples of 12.
Explanation:First, divide 121012 by 12.
12 × 10,000 = 120,000. Subtract: 121,012 – 120,000 = 1,012.
Now, 12 × 84 = 1,008. Subtract: 1,012 – 1,008 = 4.
Since 4 is less than 12, it is the remainder.
Answer:B. 4