PLEASE ANSWER I WILL GIVE THE BRAINLIEST FOR THE CORRECT ONE HURRY
In which of the following sentences is the phrase underlined?
I helped my younger brother build a sand castle at the beach.
My brother dug a giant hole using only a small pail and shovel.
After we built a sand castle, we jumped into the ocean for a swim.
At high tide, our sand castle was washed away by the waves
A
B
C
D