Which of the following best explains how an analog audio signal is typically represented by a computer? Group of answer choices An analog audio signal is measured as a sequence of operations that describe how the sound can be reproduced. The operations are represented at the lowest level as programming instructions. An analog audio signal is measured at regular intervals. Each measurement is stored as a sample, which is represented at the lowest level as a sequence of bits. An analog audio signal is measured as text that describes the attributes of the sound. The text is represented at the lowest level as a string. The correct sum of 29 will be assigned to the variable total.