The diagram depicts a battery connected to two resistors. Four students each measure separately the electromotive force (e.m.f.) of the battery, the current in the resistors, and the potential difference (p.d.) across resistor $R$. Their readings are given in the table below. Which row contains values with the correct units?
- Ae.m.f. $3.0\,\text{A}$; current $0.30\,\text{V}$; p.d. $1.5\,\text{A}$
- Be.m.f. $3.0\,\text{A}$; current $0.30\,\text{A}$; p.d. $1.5\,\text{V}$
- Ce.m.f. $3.0\,\text{V}$; current $0.30\,\text{V}$; p.d. $1.5\,\text{A}$
- De.m.f. $3.0\,\text{V}$; current $0.30\,\text{A}$; p.d. $1.5\,\text{V}$