Officer Sparrow conducted a three-month-long investigation monitoring drug activity in Caribbean County. During the investigation, he observed a suspect named Hector Barbosa sell drugs to approximately twelve individuals. In each instance, Officer Sparrow was able to positively identify the drugs because he was undercover in plain clothes observing the transactions. After watching these transactions, he sought a warrant for Barbosa's arrest. In support of the warrant, he presented a sworn statement that "he has cause to suspect and believe that Barbosa was selling drugs." The affidavit contained no other detail. The magistrate should:

A. Deny the warrant because the officer's sworn statement is conclusory and does not provide a substantial basis for probable cause.
B. Issue the warrant because the officer can provide later evidence of probable cause.
C. None of the above.