The two types of patterns used to accomplish the scan function are:

A) horizontal and vertical.
B) left and right.
C) up and down.
D) input and output.

Output

The result or data produced by a computer or system after processing input.

Scan Function

In automation, particularly in PLC (Programmable Logic Controller) systems, the scan function refers to the cyclic process where the system reads inputs, executes logic, and updates outputs systematically.

Horizontal

Refers to an orientation or position that is parallel to the ground or baseline, often used to describe direction or alignment.