Aheron is perched in a tree 50 feet above sea level. directly below the heron, a pelican is flying 17 feet above sea level. directly below the birds is a trout, swimming 23 feet below sea level.

select all the true statements.
a. the difference in height between the pelican and the heron is -33 feet
b. the difference in height between the pelican and the heron is 33 feet
c. the distance between the heights of the pelican and heron is -33 feet
d. the difference in height between the pelican and the trout is -40 feet
e. the difference in height between the pelican and the trout is 40 feet
f. the distance between the heights of the pelican and the trout is 40 feet.