Answer:
D looks to be the only good solution.
Step-by-step explanation:
19.8 is roughly 20
9.8 is roughly 10, so 1.1 represents 1.10 which is increased by 10%
5.1 is still around 5, & 1.05 is 1 increased by 5%
Very rough estimate will be given.
Hope this helps. :0)
