4 a) Given the different treatment options available below, determine obvious domination for ech using the "IS OBVIOUSLY DOMINATED BY (IODB)" method b) Which of the following treatments are obviously dominated? Treatment Cost Benefit Treatment A $4,000 12 years Treatment B $4,000 15 years Treatment X $5,000 10 years Treatment Q $6,000 12 years Treatment W $3,000 9 years Treatment E $6,000 16 years Treatment R $7,000 15 years Treatment T $4,000 14 years Treatment Y $5,000 11 years Treatment U $8,000 15 years