Write a function, stdDevOfLengths(L) that takes in a list of strings, L, and outputs the standard deviation of the lengths of the strings. Return float('NaN') if L is empty.

These statements describe lists in presentation programs: a. bullets can be turned off and on. b. bullets cannot be turned off. c. bullet styles, colors, and sizes can be changed. d. lists don't have to use bullets or numbers. e. numbering styles, colors, and sizes can be changed. f. numbers can be turned off and on. g. numbers cannot be turned off. select all that apply