41 Histologic stage is an ordinal categorical variable coded as 1-4 (higher values meaning more advanced progression of disease). Suppose this is initially modeled as a semi continuous variable in a Cox regression, resulting in the following modiell In(hazard of mortality at time t x)= In().(t)) +0.82. where xy = 1 to 4 for the four histologic stage levels. The standard error of the slope for x ( SF(B, ) ) is 0.12 - What is the estimated the risk of death for two groups who differ by one unit in histologic stage (4 to 3, 3 to 2 or 2 to 1)? a. 0.82 b. 0.82 c. 2.26 d. 0.44