3. R has a built-in character vector of US State names, state.name. Use this character vector and R's character functions to answer the following questions.Show R code

(a) List all the US State names that are more than one word. How many are there?

(b) What is the longest US State name(s) (including spaces) and how long is it?

(c) What is the longest single word US State name and how long is it?

(d) List all the US State names, where all of the upper and lower case a"s are replaced with a capital Z".