In CHAP the authenticator sends the following function to the peer $($i$.$e$.$ the device requesting authentication$)$:

Question $9$Select one:

$1.$

a$-$ Symmetric key

$2.$

b$-$ Asymmetric key

$3.$

c$-$ Cipher

$4.$

d$-$ one$-$way hash

$5.$

e$-$ two$-$way hash