Consider a relation $R(a,b,c,d,e,f,g,h)$ with functional dependencies as given below:

$abc$

$def$

$gfh$

$chd$

Consider the following statements about relation $R..$

The candidate keys of relation $R$ are $\{a,b,e,g,d\},\{a,b,e,g,f\}$ and $\{a,b,e,g,h\}.$

The candidate keys of given relation are $\{a,b,c\}$ and $\{a,b,d,e,f,g,h\}.$

The relations after normalizing to second normal form is $R1(a,b,e,g,d),R2(a,b,e,g,f)$

The relations after normalizing to second normal form is $R1(a,b,0)$ and $,$