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. Last year, Indians downloaded 12.3 billion apps, second only to the Chinese, and they spent an average of 17 hours per week on social media, more than Americans.
B. Indians ended up using more than 54 times as much data, on average, in 2018 than in mid-2016. 1. Because last year, Indians... 2. Due to which, Indians… 3. Therefore, Indians…

The sentences share a cause-effect relationship - A tells us that last year (in 2018), Indians downloaded a lot of apps and spent several hours per week on social media, more than Americans. B gives the result of this - Indians ended up using more data than Americans during this period. 1 is correct as BECAUSE is used to show causation - “Because last year, Indians downloaded 12.3 billion apps, second only to the Chinese, and they spent an average of 17 hours per week on social media, more than Americans, Indians ended up using more than 54 times as much data, on average, in 2018 than in mid-2016.” 2 is correct as DUE TO is used to show causation - “Last year, Indians downloaded 12.3 billion apps, second only to the Chinese, and they spent an average of 17 hours per week on social media, more than Americans, due to which Indians ended up using more than 54 times as much data, on average, in 2018 than in mid-2016.” 3 is correct as THEREFORE is used to show causation - “Last year, Indians downloaded 12.3 billion apps, second only to the Chinese, and they spent an average of 17 hours per week on social media, more than Americans, therefore, Indians ended up using more than 54 times as much data, on average, in 2018 than in mid-2016.”