Which statement$($s$)$ below accurately describes the Perceptron Learning Algorithm?

Statement $1$: Threshold needs to be hand coded

Statement $2$: Threshold can be learned

a$.$ Statements $1$ and $2$

b$.$ Statement $2$

C$.$ Statement $1$

d$.$ There is no threshold in Perceptron Learning

e$.$ None

what is a coorect final answer $?$