which option is ocrrect

| | Multiple Choice 4 points Theorem: If r is a rational number, then 2r+5 is a rational number. Which facts are assumed ina direct proof of the theorem? r=ab, where a, and b are integers and a#0. r=ab, where a and b are integers and b#0. 2r+5=ab, where a and b are integers and b#0. 2r+5=ab, where a and bare integers and a0. Previous