In visual basic what does this function OneTwoThreeFourSubst

In visual basic, what does this function “OneTwoThreeFour”.Substring(3,3) supposed to return?

Answer: Two

“OneTwoThreeFour”.Substring(3,3) it means finding the substring from 3rd position up to three cahracters.

String \"OneTwoThreeFour\" index will start from 0. 3rd character is \"T\". from chracter \"T\" to three characters.. So it will return \"Two\"