The next state expression of the JK flip$-$flop output is:

Select one:

a$.$ Q$($t$+1)=$J$\text{'}$Q$+$K$\text{'}$Q

b$.$ Q$($t$+1)=$JQ$\text{'}+$KQ$\text{'}$

c$.$ Q$($t$+1)=$JQ$\text{'}+$K$\text{'}$Q

d$.$ Q$($t$+1)=$J$\text{'}$Q$+$KQ$\text{'}$