John Waits Outside the Bank for His Next Victim, in This

John waits outside the bank for his next victim, in this case an elderly man who had just cashed his Social Security check. John hits the man with a club, and the man crumbles in a pile onto the ground. John quickly goes through the old man's pockets and takes his money. Later, the man identifies John in a police line-up as his assailant.

A) If John had instead called the man before he cashed his check, and told him that if he didn't give the money to him John would hurt the man's family, he would be charged with:
B) robbery.
C) strong-arm robbery.
D) aggravated robbery.
E) extortion.