Consider the following statements:Surge impedance loading of a transmission line can be increased by

I. Increasing its voltage level
II. Addition of lumped inductance in parallel
III. Addition of lumped capacitance in series
IV. Reducing the length of line
Which of these statements are correct?

A)     1 and 3

B)      1 and 4

C)      2 and 4

D)     3 and 4