<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:Please refer to the summary above to answer this questionThe APPLE study investigators are currently preparing for a 30-year follow-up evaluation. They are curious about the number of participants who will partake in follow-up interviews. The investigators noted that of the 83 participants who participated in APPLE studys 20-year follow-up, 62 were in the treatment group and 21 were in the control group. This finding raises concerns for which of the following?? A: Volunteer bias, B: Lead-time bias, C: Attrition bias, D: Inadequate sample size, E: Reporting biasn,  <response>: This is a question about potential biases in a follow-up study. Based on the information provided, the APPLE study had an initial treatment group and a control group. At the 20-year follow-up, more participants from the treatment group participated than from the control group. This disproportionate loss to follow-up between the two original groups suggests the potential for attrition bias, where differences between groups could be due to differences in retention rather than real effects.C: Attrition bias 