In cryptography the following uses transposition ciphers and the keyword is LAYER. Encrypt the following message (spaces are omitted during encryption) WELCOME TO NETWORK SECURITY!

• A. WMEKREETSILTWETCOOCYONRU!
• B. EETSICOOCYWMEKRONRU!LTWET
• C. LTWETONRU!WMEKRCOOCYEETSI
• D. ONRU!COOCYLTWETEETSIWMEKR