HOW IS THE ANSWER $-2\mathrm{.}9???$ PLEASE EXPLAIN USING SIMPLE TERMS!!!

At what distance from the lens will the image

be formed $($using the standard sign

convention$)?$

a$.-12$ cm

b$.-6\mathrm{.}7$ cm

c$.-3\mathrm{.}8$ cm

d$.-2\mathrm{.}9$ cm

What will the properties of the image be$?$

a$.$ Virtual and Upright

b$.$ Virtual and Inverted

c$.$ Real and Upright

d$.$ Real and Inverted