In the Following Argument, There Are ______ Premises (Including Subconclusions)

In the following argument, there are ______ premises (including subconclusions) that should be diagrammed: "Either you will eat an apple at lunch tomorrow, or you will not. If you will eat an apple at lunch tomorrow, then nothing you do between now and then will stop you from having that apple at lunch. If you will not eat an apple at lunch tomorrow, then any effort you make between now and then to eat such an apple will be, literally, fruitless. Therefore, you do not have two equally available options to eat or not to eat the apple. Thus, you are not really free concerning whether you will or will not eat an apple at lunch time tomorrow. (Tom Morris, Philosophy for Dummies, 1999 [slightly adapted])

A) Four
B) Five
C) Six
D) None of the above