This section contains Assertion and Reason type questions, Each question has 4 choices (1), (2), (3) and (4), out of which only one is correct.
Assertion (A) A tertiary carbocation is more stable than a secondary carbocation which is more stable than a primary carbocation.
Reason (R) The inductive effect operate through sigma bonds and decrease rapidly with increase in distance between the substituent and the reaction site,

Options

A. Both Assertion and Reason are true and Reason is the correct explanation of the nAssertion
B. Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
C. Assertion is correct but Reason is incorrect
D. Reason is correct and Assertion is incorrect

Answer

### Step-by-Step Text Solution

**Step 1: Understanding the Assertion**
- The assertion states that a tertiary carbocation is more stable than a secondary carbocation, which in turn is more stable than a primary carbocation.
- This is based on the concept of carbocation stability, which increases with the number of alkyl groups attached to the positively charged carbon atom. Alkyl groups are electron-donating and help to stabilize the positive charge through hyperconjugation and inductive effects.

**Step 2: Analyzing the Reason**
- The reason provided states that the inductive effect operates through sigma bonds and decreases rapidly with the increase in distance between the substituent and the reaction site.
- This is a true statement about the inductive effect, which indeed diminishes with distance. However, it does not directly explain why tertiary carbocations are more stable than secondary or primary carbocations.

**Step 3: Conclusion on Assertion and Reason**
- Both the assertion and the reason are true statements. However, the reason does not correctly explain the assertion. The stability of carbocations is primarily attributed to hyperconjugation and the overall electron-donating ability of the alkyl groups, rather than just the inductive effect.

**Step 4: Final Answer**
- Therefore, the correct conclusion is that the assertion is true, and the reason is also true, but the reason is not the correct explanation for the assertion.