Gallee desired to use his telescope to make more discoveries in the heavens, but his instrument was too small. He made another sad Inteisscope which maguañed sight times, and then another which magnified thirty times, and pointed it at the moon. Hur heart leaped with joy, for he saw what no human eye had ever before seen-range of mountains, deep hollows, and broad plains He turned his telescope on the planets, and found they appeared with disks like the moon at a quarter fall. He turned on the Milky Way, and beheld innumerable tiny stars
Galileo made several telescopes because

Options

A. he needed all of them to explore the heavens
B. he wanted to compare the findings obtained from different telescopes
C. the earlier mes he made were not powerful enough
D. only some of them could magnify the stars