An apple tree has 30 apples. 10 apples have fallen off of the tree. How many apples remain on the tree?
Choose the correct choice from the following options.
A) 20	B) 1	C) 0	D) 5	E) 100
A. 20
<result>A</result>
An apple tree has 30 apples. 10 apples have fallen off of the tree. How many apples remain on the tree?