lazybear992 lazybear992 02-03-2014 Biology Answered Which of the following statements is true concerning LUCA? (1) LUCA was a cell. (2) All life on Earth evolved from LUCA. (3) LUCA probably existed probably around 4.5 billion years ago. a. 1 only b. 2 and 2 c. 1 and 2 d. 1, 2, and 3