Select the phrase(s) from the given three options which can be used to form a single sentence from the two sentences given below, implying the same meaning as expressed in the statement sentences. The given options may or may not be starters.
A. China not only has more large dams in operation than the rest of the world combined; it also has the single largest.
B. China’s dam construction is not just about national pride. 1. But China’s dam… 2. Yet China’s dam… 3. Since China’s dam…

The sentences share a contradictory relationship - A tells us that China has more dams than the rest of the world combined and it also has the single largest one, and B contradicts it by telling us that China’s dam construction is not just about national pride. 1 is correct as BUT is used to show contradiction - “China not only has more large dams in operation than the rest of the world combined; it also has the single largest, but China’s dam construction is not just about national pride.” 2 is correct as YET is used to show contradiction - “China not only has more large dams in operation than the rest of the world combined; it also has the single largest, yet China’s dam construction is not just about national pride.”