self Maths Puzzle

In the following question, four similar sentences are given, of which only one isgrammatically correct, stylistically elegant and semantically consistent.
Option A Stumped by the poor response to his efforts aimed at controlling money supply andliquidity, the Finance Minister has announced a slew of stern measuresto rein in inflation.
B Embittered at the poor response to his efforts aimed at controlling money supply and liquidity,the Finance Minister has announced a slew of stern measures torein in inflation.
C Furious at the poor response to his efforts aimed at controlling money supply and liquidity, theFinance Minister has announced a slew of stern measures tocontrol inflation.
D Disappointed by the poor response to his efforts aimed at controlling money supply andliquidity, the Finance Minister has announced a slew of stern measuresto rein in inflation.

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self Other Question
Take a look at the following parts of a sentence and indicate which section creates ambiguity(confusion) in the sentence:
Option A Lily told Ella that B she had a serious fever
C and is advised to meet the doctor D at the earliest possible opportunity A man in a train travelling at 30km/hr notices that a train going in the opposite direction passes him in 9 sec.If the length of this train is 200m find its speed .