I have a neighbour. His name is Reno. He is a clown. He works in a carnival. His job is to entertain people. He makes them laugh. He wears a very colourful cost

I have a neighbour. His name is Reno. He is a clown. He works in a carnival. His job is to entertain people. He makes them laugh. He wears a very colourful costume. He also wears a colourful wig and he paints his face. He is very funny and kind.<br /________________________
"He wears a very colourful 'Costume'."
The underlined word means...
A. A theatrical clothes
B. An expensive shirt
C. An office uniform
D. A sport wear