A converging lens has focal length 10 cm. Which of the following is true?
a. When the object is about 9.8 cm from the lens then an enlarged virtual image is formed on the same side as the object.
b. When an object is placed at a distance of 20 cm from the lens, then an upright image is formed 20 cm from the lens on the opposite side.
c. When an object is placed at 10 cm from the lens, an inverted image of the same size is formed on the opposite side of the lens.
d. When an object is placed 30 cm from the lens, a magnified inverted image is formed on the opposite side of the lense. An object placed at 12 cm from the lens will form an inverted image of smaller size.