Let's say we have a program that draws a simple face and body with ellipses. It uses two variables, one for body size and one for face size: var bodySize = 100; var faceSize = 50; ellipse(200, 200, bodySize, bodySize); ellipse(200, 150, faceSize, faceSize); If we want to make ```faceSize``` dependent on ```bodySize```, so that ```faceSize``` is always one-half ```bodySize```, what expression should the ```faceSize``` variable store instead? [[☃ radio 1]]