Identify A, B, C, D, E, R and `R^(1)` in the following:

Identify A, B, C, D, E, R and R' in the following:

Identify A, B, C, D, E, R and R' in the following R-Br + Mg overset("dry ether")rarr C overset(D_(2)O)rarr CH_(3) underset(underset(D)(|))(C )HCH_(3)

Identity A, B, C, D, E, R and R' in the following:

Identify the A, B, C, D and E in the following diagram

Identify D, E and R' in the following :