The Most Accepted Method of Obtaining an Apical-Radial Pulse Is

The most accepted method of obtaining an apical-radial pulse is

A) One nurse counts the pulse for 1 minute,first at the brachial site and then at the apical site.
B) One nurse counts the pulse for 1 minute at the brachial and apical sites simultaneously.
C) Two nurses count the pulse for 1 minute simultaneously,one counts at the apical site and one at the radial site,using one watch.
D) Two nurses count the pulse for 1 minute,first one nurse counts at the apical site and then one at the radial site,each using his or her own watch.