3. (10 points) There are several nine-digit numbers composed of 8 threes and 1 zero. Among them, the numbers that leave a remainder of 1 when divided by 4 are ( ) in number.
A. 5
B. 6
C. 7
D. 8
【Analysis】The divisibility rule for 4 is to only look at the last two digits being multiples of 4. A number meets the condition as long as the last two digits, when divided by 4, leave a remainder of 1. We only need to consider the position of 0.

【Solution】Solution: When the last three digits are 033, the condition is met, and the other digits are uniquely determined by one digit. When the last three digits are 333, there are still 6 digits in the 9-digit number, and 0 cannot be the first digit. There are 5 possible positions for 0. Thus, there are 5 numbers in total.

When the last two digits are 03 or 30, the condition is not met.
Therefore, the answer is: B.