Acme Engineering Needed Cash and on March 14^th Assigned a Block

Multiple Choice

Acme Engineering needed cash and on March 14^th assigned a block of its accounts receivable to Wellington Finance Company. On March 21^st, it assigned another block to Bristol Finance Company. By an oversight, the second block contained an account, a receivable from Smith, which Acme had already assigned to Wellington. The notice of assignment from Bristol arrived at the Smith offices on March 24^th, and Wellington's notice arrived on March 28^th. What is the most correct action that Smith should take?

A) Pay any demand of Acme made on March 16^th or 23^rd; pay any demand of Bristol on or after March 24^th.
B) Pay any demand of Acme made on March 13^th; pay any demand of Wellington on or after March 28^th.
C) Refuse to pay all Wellington demands.
D) Refuse to pay all Acme demands made after March 24^th.
E) A, C, D.