What is the cause of the syntax error?

Given the AIRPLANES data set

AlRPLANES

TYPE MPG

——– ——

F-18 105

C-130 25

Harrier 75

A-6 110

The following SAS program is submitted:

data gt100;

set airplanes(keep = type mpg load);

load = mpg * 150;

run;

The program fails to execute due to syntax errors.

What is the cause of the syntax error?
A . MPG is not a numeric variable.
B. LOAD is not a variable in the data set GT100.
C. LOAD is not variable in the data set AIRPLANES.
D. LOAD must be defined prior to the SET statement.