Read the passage below and solve the questions based on it.
There are 2 filling taps A and B and an emptying tap C which are used in a laboratory to fill or empty bottles. The three taps are attached to a computer and they function according to the commands given by the computer. The following are the commands that the computer gives:
F(A, x, t1) Fill the bottle with tap A at x cc/minute for t1 minute
F(B, y, t2) Fill the bottle with tap B at y cc/minute for t2 minute
E(C, z, t3) Empty the bottle with tap C at z cc/minute for t3 minute
The commands F (A, 10, 500) and (B, 40, 500) can fill an empty bottle. Which of the following commands can now empty the bottle?