Who invented the printing press?

Goldsmith and inventor Johannes Gutenberg was a political exile from Mainz, Germany when he began experimenting with printing in Strasbourg, France in 1440. He returned to Mainz several years later and by 1450, had a printing machine perfected and ready to use commercially: The Gutenberg press.

i am sure the answer is d

keeping a cash reserve because cash flow is the the movement of money through a company and if it just sits there, it wont the movement