Step 1: Understanding the Concept.
I-flex Solutions, known for its Flexcube banking software, was later acquired and rebranded as Oracle Financial Services Software.
Step 2: Check the options.
ICICI, HSBC, and ABN Amro were not the parent from which I-flex originally spun out, so options B, C, and D are wrong.
Step 3: Final Answer.
I-flex Solutions began as a technology division of Citicorp before becoming an independent software company, so option A is correct.