Body Surface Area Estimation in Burns

Regarding the Rule of Nines for estimation of body surface area (BSA) affected in thermal burns, all of the following statements are correct EXCEPT:

A 32-year-old man sustains a thermal burn injury in a house fire. During emergency assessment using the Rule of Nines, the following body regions are documented as burned: entire anterior trunk, entire posterior trunk, and both lower limbs. All of the following statements regarding his BSA estimation are correct EXCEPT:

A 6-year-old child is admitted with 30% BSA thermal burns following a house fire. The attending physician needs to estimate the exact percentage of body surface area to calculate fluid requirements accurately. Which investigation would be most appropriate to account for the child's age-specific body proportions?

A 32-year-old man sustains a thermal burn to his entire right upper limb and anterior trunk. Which feature best distinguishes the Rule of Nines estimation of total body surface area (TBSA) from the Lund and Browder chart in this clinical scenario?

A 4-year-old child is admitted with 35% TBSA burns following a house fire. When comparing the Rule of Nines with the Lund and Browder chart for this patient, which finding would most clearly demonstrate why Lund and Browder is preferred in paediatric burn assessment?