What size tire fits a 1987 class c motorhome built on a ford e350 chassis?

What size tire fits a 1987 class c motorhome built on a ford e350 chassis?

It should be on the sidewall of the tyre check link below

Andy C

235/85-16, 245/75-16 and 225/75-16. Ford uses
various sizes. Look on sticker inside driver side
door jam.