Logical Reasoning: Last year the rate of inflation was 2 percent, but for the current year it has been 4 percent. We can consider that inflation is on an upward trend and the rate will be still higher next year. Which of the following statements most seriously weakens the conclusion above?

A    The 1.2 percent rate inflation fast year represented a 10-year low figure.

B    The inflation figure were computed on the basis of a representative sample of economic data rattier than all of the available data

C    Last year a dip in oil prices brought inflation temporarily below its recent sable annual level of 4 percent

D    Increase in the pay of some workers are tied to the level of inflation, and at an inflation rate 4 percent or above, these pay raises constitute a force causing further inflation