John works as a Network Administrator for Perfect Solutions Inc.

John works as a Network Administrator for Perfect Solutions Inc. The company has a Linux-based network. John is working as a root user on the Linux operating system. He wants to break a dat a.txt file, 200MB in size, into two files in which the size of the first file named data.txt.aa should be 150MB and that of the second file named data.txt.ab should be 50MB. To accomplish his task and to further delete the data.txt file, he enters the following command: split --verbose -b 150m data.txt data.txt. ; rm -vf data.txt Which of the following commands can John use to join the splitted files into a new data.txt file?