In the sentences, certain words are in bold and numbered from A to H, which are the possible pairs to be interchanged. Choose the pair(s) of words that need(s) to be interchanged to make the sentence grammatically correct and meaningful.

a. Repeats (A) public protests and political pressure,(B) and on the strength of hurriedly drafted (C) legislation, Jallikattu is now back on the Pongal calendar (D)
b. The cycle following (E) each passing year, with the lag between (F) price and production causing (G) a huge mismatch (H)  between supply and demand.