Which sentence contains the BEST use of dialogue to convey that Harry is afraid of the snake he has found in his back yard?

A)
"Yikes! It's a snake! Run and get dad!" Harry yelled fearfully.

B)
"Look! It's a snake. Let's catch it and play with it," Harry said to Tom.

C)
"A snake! Let's keep looking. There may be a whole family in our back yard." Harry said excitedly.

D)
"There's a snake over by the swing in the back yard. I wonder if it's poisonous?" Harry pondered thoughtfully.