Consider the Following Method Header for the BankAccount Class: Public

Consider the following method header for the BankAccount class: public void addInterest(double rate)
{
______________________________________
}
Fill in the blank in the method body.

A) balance = balance * (1 + rate) ;
B) balance = balance * rate;
C) balance = balance * (1 + interestRate) ;
D) balance = balance * interestRate;