The correct option is D had got
The words 'As soon as Sarla ______ her money' describe an action that happened in the past, before another action commenced 'she rushed out to the place'.
Option C: 'Had got' is in the past perfect tense. It describes an action that happened in the past, before another commenced. It agrees to the given sentence, hence option C is correct.
Option B: 'Got' is in the simple past tense and describes an action that was completed in the past. It does not describe an action that took place before another.
Option A: 'Get' is the base form of the verb (or a present verb for the first/second person). It does not describe a past action, nor is 'get' used for the third person point of view 'Sarla'.
Option D: 'Had been got' is in the passive voice (the subject receives the action) whereas the sentence here is in the active voice ( the subject 'Sarla' performs the action).
Also, in the passive voice, 'by' is used to describe the action done 'by' the object. That word is missing here.
Hence options B, A and D are incorrect.