Your customer needs to print simple line drawings at a speed of at least 70 A1 prints per hour.
What is the lowest cost printer you can recommend to the customer?

A.
T120 ePrinter

B.
T520 ePrinter

C.
T790ps ePrinter

D.
T920 ePrinter

Explanation:
http://m.hp.com/id/en/products/designjet-printers/productdetail.do?oid=5263087(expand overview)