Question 11Please choose the perfect answer only. This problem is about the translation of a logical statement into an equivalentEnglish statement.Let C(x, y) be the statement "x and y have chatted over Zoom," where the domainfor the variables x and y consists of all members in your group.Select one of the following choices to indicate the English statement correspondingtoForEvery y [C(Mary, y) <-> (y Robert)].a. Mary has chatted with Robert but not with the othersO b. Mary has chatted with everyone except RobertO c. Robert has chatted with Mary onlyO d. None of the AboveO e. Nobody has chatted with Robert or Mary

Given, ForEvery y [C(mary, y)<−>(y=Robert)] According to the given information, ForEvery y…

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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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Question 11

Please choose the perfect answer only.

This problem is about the translation of a logical statement into an equivalent
English statement.
Let C(x, y) be the statement "x and y have chatted over Zoom," where the domain
for the variables x and y consists of all members in your group.
Select one of the following choices to indicate the English statement corresponding
to
ForEvery y [C(Mary, y) <-> (y Robert)].
a. Mary has chatted with Robert but not with the others
O b. Mary has chatted with everyone except Robert
O c. Robert has chatted with Mary only
O d. None of the Above
O e. Nobody has chatted with Robert or Mary

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