Which of the following is an example of a SELECTOR filter?
Select the correct answer from below given options:
a) All the options
b) filter: { "type": "regex", "dimension": < dimension_string>, "pattern": < pattern_string> }
c) filter: { "type": "selector", "dimension": < dimension_string>, "value": < dimension_value_string> }
d) filter: { "type": "columnComparison", "dimensions": [< dimension_a>, < dimension_b>] }