Are the p,t,c aspirated or unaspirated

Are the p,t,c in classical pronunciation aspirated or unaspirated? Or either is fine? I learned from Wheelock’s Latin, and in the book it described the pronunciation as p,t,c(while /k/ sound) in English. But English’s p,t,c are aspirated except lead by a ‘s’, while the ecclesiastical pronunciation uses an Italian style which is unaspirated. So, in classical pronunciation, are they aspirated or unaspirated?

Unaspirated, unless followed by h (mostly Greek words). But most English speakers don’t bother trying to avoid aspiration.