i need answer to this question

Consider the following graphs over the vertices { a, b, c, d, e, f} . Which of them contain Euler paths? a) [[a, b] , [b, c] , [b, d] , [b, e] , [b, f] , [c, d] , [c,f] , [d, e] , [a, +]] O Contains a Euler path O Contains a Euler Circuit O Contains both O Contains neither. Submit part Unanswered b) [c, f ] , [a, c] , [a, d] , [b, c] , [b, d] , [b, e] , [b, f] , [(,e] , [d, e] , [d, f] , [e, f]] O Contains a Euler path O Contains a Euler Circuit O Contains both O Contains neither. Submit part Unanswered