From the following list of accounts, calculate the quick ratio.

Cash

$ 3,000

Accounts payable

$ 8,000

Accounts receivable

6,000

Salary payable

3,000

Inventory

10,000

Notes payable (due in 2 years)

8,000

Prepaid insurance

2,000

Short term investments

2,000

a. 2.1

b. 1.3

c. 1.0

d. 1.4