(1) The defendant may be found guilty of an offense necessarily included in the offense charged or of an attempt to commit either the offense charged or an offense necessarily included in the offense charged.
(2) A lesser included offense instruction must be given when there is a proper request by one of the parties and the jury, based on the evidence, could be warranted in finding the defendant guilty of a lesser included offense.
(3) When a lesser included offense instruction is given, the court shall instruct the jury that it must reach a verdict on the crime charged before it may proceed to a lesser included offense. Upon request of the defendant at the settling of instructions, the court shall instruct the jury that it may consider the lesser included offense if it is unable after reasonable effort to reach a verdict on the greater offense.