JEE Main 2019 Physics question

A 27 mW laser beam has a cross-sectional area of 10 mm. The magnitude of the maximum electric field in this electromagnetic wave is given by: [Given permittivity of space = SI units, Speed of light c = m/s]

• (A)2 kV/m
• (B)1 kV/m
• (C)1.4 kV/mCorrect
• (D)0.7 kV/m