Which is the FIRST sentence of the paragraph?

Rearrange the following six sentences a, b, c, d, e and f in the proper sequence to form a meaningful paragraph; then answer the questions given below them.
a) The Supreme Court verdict of May 2014 striking down a statutory provision for prior government clearance for a Central Bureau of Investigation probe against officials of the rank of joint secretary and above is the touchstone against which the constitutionality of the pre-investigation sanction requirement will be tested.
b) The Union government, too, has a set of amendments to the Prevention of Corruption Act pending since 2013, including a proviso for prior sanction.
c) The court had observed that such a provision destroys the objective of anti-corruption legislation, blocks the truth from surfacing, thwarts independent investigation and forewarns corrupt officers.
d) This is the first time a section prescribing punishment for disclosure is being introduced in India, though provisions barring investigation or prosecution without prior sanction are also in force in Maharashtra.
e) Anti-corruption legislation in India seems to be in a state of unacceptable flux.
f) However, the time limit for the sanctioning authority to act is 180 days in Rajasthan, and 90 days in Maharashtra.