Choose the correct form of quel to complete the following sentence je sais docteur il prefere quelle quel quelles quels

Assign the correct gender and number.

Your new boss just entered your office, he says "bonjour monsieur, comment allez-vous? ". how would you answer his question? by saying “ça va. et toi? ” by shake his hand and saying ”salut. et vous? ” by saying “bonjour. et toi? ” and shaking his hand. by shaking his hand and saying ”bonjour. bien et vous? ”

Translate and answer the questions !