(Cyber Security) (T or F) Choose the Correct multiple choice Answer for 18 & 19

Question 18 1 pts Alices uses a Message Authentication Code (MAC) to communicate with Bob. Alice send's a message x "Transfer $1000 to Mark" in clear and also send auth(x). Eve intercepts the message and replaces "Mark" with Eve". Bob will are able to detect this change. True False Question 19 1 pts Alices uses a Digital Signature to communicate with Bob. Alice send's a message x = "Transfer $1000 to Mark" in clear and also send auth(x). Eve intercepts the message and replaces "Mark" with "Eve". Bob will are able to detect this change. True False