A person whose near point is at 50cm uses a convex lens of focal length f=5cm as a simple magnifier, holding the lens very close to her eye. Which pair (p,q) is correct, where p is the object distance from the lens required for the final image to be at infinity and q is the angular magnification in that adjustment?
a) (5cm,6)
b) (10cm,5)
c) (5cm,10)
d) (4cm,11)