In the sentences below, would it be right to replace older and taller by the oldest or the tallest ?

a.    Who is older, Bill or Philip?

b.    Who is taller, Peter or Mike?

a.    Who is older, Bill or Philip?        OK for 2

b.    Who is taller, Peter or Mike?        OK for 2

c.     Who is the oldest, Bill, Philip, Peter, or Mike?    For 3 or more

c.     Who is the tallest, Bill, Philip, Peter, or Mike?     For 3 or more

Be well.

CR