How many times will line 4 (ADD R5 R1 R5) be executed during an invocation of the following TCL code, if the value stored in R3 before running that code was 16? 0 SET R1 3 // set value 1 SET R5 13 2 SET R9 22 3 INC R3 4 // increase value 4 R5 R1 R5 // add 5 JMPLT 3 R5 R9 // jump if less than 6 SET R1 0