8086 has maximum clock frequencies ranging from:

The correct answer is option 4):(5 MHz - 10 MHz)

Concept:

• 8086 Microprocessor is an enhanced version of the 8085Microprocessor that was designed by Intel in 1976. It is a 16-bit Microprocessor having 20 address lines and 16 data lines that provide up to 1MB of storage. It consists of a powerful instruction set, which provides operations like multiplication and division easily
• The clock signal is provided through Pin-19. It provides timing to the processor for operations. Its frequency is different for different versions, i.e. 5MHz, 8MHz and 10MHz
• 8086 has maximum clock frequencies ranging from 5 MHz - 10 MHz

Additional Information8086 Microprocessor:

• 8086 Microprocessor is an enhanced version of the 8085Microprocessor that was designed by Intel in 1976.
• It is a 16-bit Microprocessor having 20 address lines and16 data lines that provide up to 1MB of storage.
• It consists of a powerful instruction set, which provides operations like multiplication and division easily.
• It is a 40-pin DIP (Dual In-Line Package) that uses MOS technology. 

Fig: Pin Diagram of 8086 Microprocessor

• It has two GNDs (Ground) as the circuit's complexity demands a large amount of current flowing through the circuit, and multiple grounds help in dissipating the accumulated heat, etc.
• 8086 works on two modes of operation: Maximum mode and Minimum mode.