upi $=$ nnu please provide the method to work this out thank you $$ In the first line of the solution box below, enter your UPI. Take the first three letters of your UPI and convert them to capital letters. Encode the letters as A$=0,$ B$=1,$ C$=2,...,$ X$=24,$ Z$=25.$ Encrypt the letters using the block cipher matrix: K$=[[16411$; $360$; $1032]]$ using modulo$-26$ arithmetic. Enter the three letters of ciphertext in the second line of the solution.