I often think why are people finding this confusing? It's not difficult! Did any of these posters even read the OP!? When reading threads here. On another thread I saw someone say so you know what the national average reading age is? When peoples comprehension was criticised. So I googled it. And I'm appalled!
How on earth is the UKs reading ability so poor that the average adult has the reading ability of a 10 year old child!?