Which of the Following Is the Best Way to Measure

Which of the following is the best way to measure the wave height of a set of waves at the beach?

A) Hold a meterstick in the water and measure how high the wave goes on the stick
B) Count the number of waves that pass by in a minute
C) Using a stopwatch, time the waves as the crests move by
D) Take a picture of the waves with a camera and measure the distance between the crests with a ruler
E) Using a scale, measure the pressure of the largest wave