A thin converging lens has a focal length of 10 cm. An object is placed 30 cm to the left of the lens. Which of the following best describes the image that forms?
a) 15 cm to the right of the lens, upright and enlarged.
b) 15 cm to the left of the lens, upright and reduced in size.
c) 15 cm to the right of the lens, inverted and reduced in size.
d) 7.5 cm to the right of the lens, upright and reduced in size.