Which of the following can't be a variable name in R? 1. `` `if` `` 2. `_abc` 3. `var1` 4. `1stVar` #RStats #DataScience [TimeStamp:18072022123038]
2
13
6
0
0
Options: 1. 1st and 2nd 2. 2nd and 3rd 3. 2nd and 4th 4. 1st and 3rd
