Assertion : The information contained in our original low frequency baseband signal is to be translated into high or radio frequencies before transmission.
Reason: For transmitting a signal, the antenna should have a size comparable to the wav elength of the signal.

Options

A. A and R both are true and R is correct explaination of A
B. A is true but R is wrong
C. A is wrong but R is true
D. Both A and R are wrong

Explanation

To analyze the assertion and reason provided in the question, we will break down the concepts step by step.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that low-frequency baseband signals must be translated into high or radio frequencies before transmission. This is true because low-frequency signals have longer wavelengths, which can lead to difficulties in transmission over long distances.

**Hint**: Think about how low-frequency signals behave in terms of wavelength and their ability to travel through the atmosphere.

2. **Understanding the Reason**:
- The reason given is that for transmitting a signal, the antenna should have a size comparable to the wavelength of the signal. This is also true. The efficiency of an antenna is significantly influenced by its size relative to the wavelength of the signal it is transmitting.

**Hint**: Recall the relationship between frequency and wavelength (λ = c/f), where c is the speed of light.

3. **Connecting Assertion and Reason**:
- Both the assertion and the reason are true. The reason provides a valid explanation for the assertion. By converting low-frequency signals to high-frequency signals, we ensure that the antenna size can be manageable and effective for transmission.

**Hint**: Consider how the properties of waves and antennas interact in communication systems.

4. **Conclusion**:
- Since both the assertion and the reason are true, and the reason correctly explains the assertion, we conclude that the correct answer is that both A and R are true, and R is the correct explanation of A.

**Hint**: Look for the logical connection between the assertion and the reason to determine their relationship.

### Final Answer:
Both the assertion and the reason are true, and the reason is the correct explanation of the assertion.