Can you target an illusion from Major Image with Magic Missile?

The spell major image has been used to create the illusion of a creature. A character does not know it is an image and attempts to cast magic missile at it.

What happens when the character attempts to cast magic missile targeting the illusion?

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    \$\begingroup\$ Major illusion to mean as if from the spell major image or a colloquial sense of any illusion of prominence? \$\endgroup\$ Jun 6 '18 at 19:02
  • \$\begingroup\$ @DavidCoffron We'll go with major image. \$\endgroup\$
    – GcL
    Jun 6 '18 at 19:03