<prompt> A newly posted junior doctor had difficulty in finding out base deficitexcess for blood in a given patient. An experienced senior resident advised a quick method to determine acid base composition of blood based on PCO2. Which of the following is the likely method he suggested to predict acid base composition of blood?Red ford normogramDuBios normogramGoldman constant field equationSiggard-Andersen normogram  <response>: D i.e. Siggard - Anderson normogram 