Create a string called $$string$$ with the value as $$Machine Learning$.$ Which code$($s$)$

is$/$are appropriate to slice the substring $$Learn$?$

a$.$ string$[$slice$(13,8,1)]$

b$.$ string$[$slice$(1,8,1)]$

c$.$ string$[8$:$14]$

d$.$ string$[$slice$(8,13,1)]$