The Endoplasmic Reticulum (ER)is a Single Membrane Continuous with the Nuclear

The endoplasmic reticulum (ER) is a single membrane continuous with the nuclear envelope and a series of interconnected sacs throughout the cell.Why might it be beneficial to the cell for the ER to be continuous with the nuclear envelope? It might be beneficial for the ER and nuclear envelope to be connected because it

A) takes less energy, DNA, carbohydrates, and phospholipids for the ER to synthesize centrioles.
B) is easier for messages to get from the nucleus to the ER where proteins and lipids are made for the cell; this would require the use of less energy.
C) would make it easier for the nucleus to actually carry out cellular respiration.
D) would make it easier for the ER to carry out photosynthesis.