classify these statements as true or false:

A. If the offer or does not expressly specify a certain mode of acceptance, then acceptance can be made by any means, whether or not it is "reasonable"

B. Courts normally have not enforced the terms of click on agreements

C. In effect, a counteroffer converts the original offer or into an offer we with the power of acceptance

D. An agreement to agree to the material terms of a contract at some future date may be enforceable

E. Putting an item up for sale on an online auction site is an offer