The correct option is C A is true but R is false
The process of removal of stamens or anthers before they dehisce without affecting the female reproductive organs is called emasculation. This is done to avoid self-pollination in case of bisexual flowers.
The emasculated flower is enclosed in a bag to avoid pollination by any unwanted pollen grains. Hence, bagging is required for emasculated flowers. Therefore, the assertion is true but, the reason is false.