A hormone circulating in the blood with target tissue 1, 2, and 3 could act selectively on only target tissue 1 if:

• A. Target tissue 1 had fewer hormone receptors than 2 and 3.
• B. Target tissues 2 and 3 had hormone receptors with a higher hormone affinity than 1.
• C. Target tissue 1 had hormone receptors with a higher hormone-affinity than 2 and 3.
• D. The hormone was released only in the vicinity of target tissue 1.