Technician a says passive systems use compliant rubber bushings that allow a limited amount of rear wheel steering during cornering. technician b says active systems use four electric steering units, one at each corner of the vehicle.

who is correct?

a. technician a
b. technician b
c. both technician a and technician b
d. neither technician a nor technician b

Write a method public static string getdigits(string phonenumber) that takes an 11-character phone number written with any combination of 11 uppercase letters, lowercase letters and/or digits, and zero or more hyphens, and which returns the digits that a person would have to press on a cell phone to dial that phone number. we will use the mapping of letters to digits given at en.wikipedia.org/wiki/telephone_keypad# /media/file: telephone-keypad2.svg you may assume that the string parameter phonenumber contains some combination of exactly 11 uppercase letters, lowercase letters and/or digits, but that any number of hyphens may be present. you can assume that a hyphen will not appear as the first or last character of the string. do not assum