The correct option is D 4,981; 4,984; 4,998; 5,000
6,000 > 5,980 > 4,678 < 9,700 ⇒ not in ascending order.
3,321 > 3,200 > 3,100 < 3,199 ⇒ not in ascending order.
3,998 < 3,987 < 4,000 < 4,001 ⇒ not in ascending order.
4,981 < 4,984 < 4,998 < 5,000
Hence, the numbers 4,981; 4,984; 4,998; 5,000 are arranged in ascending order.