નીચેની પ્રક્રિયા શ્રેણીમાં,મુખ્ય નીપજો $A$ અને $B$ શું છે?

• A
  $A = 4-(3,4-\text{dimethylphenyl})-4-\text{oxobutanoic acid}$; $B = 6,7-\text{dimethyl}-3,4-\text{dihydronaphthalen}-1(2H)-\text{one}$
• B
  $A = 4-(3,4-\text{dimethylphenyl})-4-\text{oxobutanoic acid}$; $B = 6,7-\text{dimethyl}-1,2,3,4-\text{tetrahydronaphthalene}$
• C
  $A = 4-(2,3-\text{dimethylphenyl})-4-\text{oxobutanoic acid}$; $B = 5,6-\text{dimethyl}-3,4-\text{dihydronaphthalen}-1(2H)-\text{one}$
• D
  $A = 4-(2,3-\text{dimethylphenyl})-4-\text{oxobutanoic acid}$; $B = 5,6-\text{dimethyl}-3,4-\text{dihydronaphthalen}-1(2H)-\text{one}$