What is order of relative rate of reaction of following amine with methyl iodide?

Question

What is order of relative rate of reaction of following amine with methyl iodide? <img class="img-fluid question-image" alt="Question" src="https://cdn.tardigrade.in/q/nta/c-r5psnsaun6bjg2hs.jpg" /> (A) A>B>C (B) A>C>B (C) B>C>A (D) B>A>C

Tardigrade Admin · Accepted Answer

Due to low electro negativity of N in compound C basic character decreases. Due to umbrella effect, A is least reactive.

Q. What is order of relative rate of reaction of following amine with methyl iodide?

$A > B > C$

$A > C > B$

$B > C > A$

$B > A > C$

Due to low electro negativity of N in compound C basic character decreases. Due to umbrella effect, A is least reactive.