Q. According to API, the acceptable particle concentration of wet particle solution for fluorescent particles is:

• (A) 0.1 to 0.4 mL by volume
• (B) 0.1 to 0.5 mL by volume
• (C) 0.1 to 0.6 mL by volume
• (D) 0.1 to 0.7 mL by volume