Karl Is Posting Signs on Campus and He Ran Out

Multiple Choice

Karl is posting signs on campus and he ran out of tape to put up the last sign.He could not figure out another way to put up the sign even though he was chewing gum and could have used the gum to put up the sign.Karl most likely does not come up with this solution because of

A) framing.
B) functional fixedness.
C) restructuring.
D) lack of insight.