A Store Applies a 15 Percent Service Charge on All

A store applies a 15 percent service charge on all items with a price of at least $150. No service charge is otherwise applicable. Which of the following DOES NOT correctly compute the service charge?

A) double serviceCharge = 0;
If (cost >= 150)
{
ServiceCharge = 0.15 * cost;
}
B) double serviceCharge = 0.15 * cost;
If (cost <= 150)
{
ServiceCharge = 0;
}
C) double serviceCharge;
If (cost < 150)
{
ServiceCharge = 0;
}
Else
{
ServiceCharge = 0.15 * cost;
}
D) double serviceCharge = 15;
If (cost >= 150)
{
ServiceCharge = 0.15 * cost;
}
Else
{
ServiceCharge = 0;
}