1. What image does d3 describe? (define d1 (drawing-scale drawing-unit-circle 15)) (drawing-recolor d1 "blue") (define d2 (drawing-recolor (drawing-vshift d1 20) "red")) (define d3 (drawing-group d1 d2)) A.Red and blue overlapping circles, stacked vertically, red higher. B.Red and blue non-overlapping circles, stacked vertically, blue higher. C.Red and black overlapping circles, stacked vertically, black higher. D.Red and black overlapping circles, side-by-side. E.None of the above

2. What image does d3 describe? (define d1 (drawing-scale drawing-unit-circle 15)) (drawing-recolor d1 "blue") (define d2 (drawing-recolor (drawing-vshift d1 20) "red")) (define d3 (drawing-group d1 d2)) AC BD E None of the above

3. Which expression is most likely to do what you mean? A.(drawing-scale drawing-unit-square 10) (drawing-vshift drawing-unit-square 30) B.(drawing-scale (drawing-vshift drawing-unit-square 30) 10) C.(drawing-vshift (drawing-scale drawing-unit-square 10) 30) D.Both of the above are the same E.I’m not sure