In Java, which of the following for$-$loop structures is used to iterate through each element in an array named arr?

A$.$ for$($int i $=0$; i $<$ arr.length; i$++)$

B$.$ for$($int i: arr$)$

C$.$ for$($int i $=0$; i $<=$ arr length; i$++)$

D$.$ for$($int i $=1$; i $<$ arr.length; i$++)$