Read the following sentences to find out whether there is any grammatical mistake/error in them. The error, if ant, will be in one part of the sentence. Mark the part with the error as your answer. If there is no error, mark 'No error' as your answer. (Ignore the errors of punctuations If any)
States dependent on oil and gas revenues / are growing increasingly anxious about/ the ripple effect that fading of prices/ may have on their local economies,
(a) States dependent on oil and gas revenues
(b) are growing increasingly anxious about
(c) the ripple effect that fading of prices
(d) may have on their local economies
(e) No error