CS Foundation Response Sheets

hi frnds..!!

pls help me out with a little querry of mine..i have completed answering to the foundation test papers and i am going to submit them all 4 together..so can i just put them altogether in an envelope and post it or i compulsorily need to wrap n roll them..also pls tell me whether i can submit it via speed post or i need to send it through BOOK POST as written on the wrappers..??

help me out guys soon, pls, i need to submit the papers today at any condition....!!