What is true regarding the thermal ECG paper?

Question

Quizplus · Accepted Answer

ECG machines with printers use special ECG paper. The paper can be either Z-folded paper or 8.25 $\times$ 11-inch paper. A special heat sensitive coating on the paper allows the tracing to be "burnt" onto the paper. The ECG paper is universally created with small and large boxes. A small box is 1 mm $\times$ 1 mm and the large box is 5 mm $\times$ 5 mm. The large box is made up of 25 small boxes (5 rows and 5 columns).

What Is True Regarding the Thermal ECG Paper? A) a Small

What Is True Regarding the Thermal ECG Paper?
A) a Small