Encrypt the plaintext x $=$ x$1||$x$2||$x$3=10101010||01010101||11110000$ using the modes $($c$)$ Encrypt the plaintext $x=x_1||x_2||x_3=10101010||01010101||11110000$ using the modes CBC where the blockcipher is defined as in $($b$),$ key $k_1=0101$ for the first round, and key $K_2=1010$ for the second round. Use $IV=10001000.$

CBC where the blockcipher is defined as in $($b$),$ key k$1=0101$ for the first round, and

key K$2=1010$ for the second round. Use IV $=10001000.$