Consider the following code snippet. What should be placed in the blank to cause a message to be displayed when the user enters the same letter twice in a row? letter = input ("Enter the next letter in the alphabet: ") while letter != "": previous = letter letter = input ("Enter the next letter") if print ("Duplicate input") a. letter == letter O b. alphabet[0] == letter =3%3D O c. alphabet[0] == previous 3D= Od. letter == previous

Consider the following code snippet. What should be placed in the blank to cause a message to be displayed when the user enters the same letter twice in a row? letter = input ("Enter the next letter in the alphabet: ") while letter != "": previous = letter letter = input ("Enter the next letter") if print ("Duplicate input") a. letter == letter O b. alphabet[0] == letter =3%3D O c. alphabet[0] == previous 3D= Od. letter == previous

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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help finish the code of the provided code.
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