Digital signals
(`i`) do not provide a continuous set of values.
(`ii`) represents values as descrete steps.
(`iii`) can utillize binary system
(`iv`) can utillize decimal as well as binary system.
The true option is.

Options

A. (i) and (ii) only
B. (ii) and (iii) only
C. (i), (ii) and (iii) but not (iv)
D. All of (i), (ii), (iii) and (iv)

Answer

To determine the true option regarding digital signals, we will analyze each statement step by step.

1. **Statement (i): Digital signals do not provide a continuous set of values.**
- Digital signals are characterized by discrete values rather than a continuous range. This statement is **true**.

2. **Statement (ii): Digital signals represent values as discrete steps.**
- Digital signals indeed represent information in discrete steps, meaning they take on specific values rather than a continuous spectrum. This statement is **true**.

3. **Statement (iii): Digital signals can utilize a binary system.**
- Digital signals primarily use the binary system (0s and 1s) for representation. This statement is **true**.

4. **Statement (iv): Digital signals can utilize decimal as well as binary system.**
- While digital systems can represent decimal values, they fundamentally operate on a binary system. Therefore, this statement is **false** because digital signals do not typically utilize a decimal system in the same way they utilize binary.

Now, we summarize the true statements:
- Statements (i), (ii), and (iii) are true.
- Statement (iv) is false.

Therefore, the true option that includes all the correct statements (i), (ii), and (iii) but excludes (iv) is **Option 3**.

### Final Answer:
The true option is **Option 3**.