What is happening if energy input remains constant and voltage remains the same in a circuit, but the current decreases?

AThe resistance has increased.
BThe volts have decreased.
CThe power has increased.

Verified Answer :

Ohm's law deals with the relation between
voltage and current in an ideal conductor. It states that: Potential difference
across a conductor is proportional to the current that pass through it. It is
expressed as V=IR. The correct answer from the choices listed above is option A. The resistance has increased. 

Answer:

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Explanation:the answer is the resistance has increased