Question: Pieter 'Piet' Klijnveld, was a Dutch accountant who started a practice that after several mergers would grow into which professional service company and one of the Big Four auditors, along with Deloitte, Ernst & Young (EY), and PricewaterhouseCoopers (PwC)?
Related documents: [0]  [DOC] Pieter 'Piet' Klijnveld (16 August 1874 – 9 February 1945) was a Dutch accountant who started a practice that after several mergers would grow into the international accounting firm KPMG. [END] 
[1]  [DOC] KPMG is a professional service company and one of the Big Four auditors, along with Deloitte, Ernst & Young (EY), and PricewaterhouseCoopers (PwC). [END] 
Answer: 
KPMG
KPMG